- published: 04 Oct 2014
- views: 171634
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Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
Embryonic folding is the process of converting the embryo from a flat disc, into a cylinder.
This cylinder consists of three main layers, derived from the trilaminar embryonic disc: the endoderm in the center, the ectoderm on the outside, and the mesoderm, which is found between the two layers.
During the fourth week of development, folding of the embryo occurs as a result of the differential rates of growth of the embryonic structures. The embryonic disc and amnion grow rapidly, however, growth of the yolk sac is much slower.
Embryonic folding occurs in two planes: the horizontal plane, which results in the development of two lateral body folds, and the median sagittal plane, which causes the longitudinal cranial (head fold) and the caudal (tail fold) of the embryo to develop.
As folding continues simultaneously in both planes, the result is a very rapid development of the embryo.
The endoderm of the trilaminar disc is mainly responsible for the formation of the epithelial lining and glands of the gastrointestinal tract. As the lateral, cranial and caudal folds of the endoderm fold towards the midline, they fuse, incorporating the dorsal part of the yolk sac to create the primitive gut tube.
The gut tube is divided into three main parts: the foregut, midgut, and hindgut.
The foregut can be seen at the cranial end of the embryo and is temporarily closed by a membrane, called the oropharyngeal membrane. At the end of the fourth week of development, the oropharyngeal membrane ruptures to connect the future oral cavity with the pharynx.
Until the fifth week of development, the midgut is connected to the yolk sac, which narrows into a stalk known as the vitelline duct, as embryonic folding continues. Eventually, the yolk sac constricts and detaches from the midgut, and the midgut seals.
The caudal end of the hindgut is also temporarily closed by a membrane, called the cloacal membrane, which separates the upper and lower parts of the anal canal.
The cloacal membrane ruptures during the seventh week of development to form the urogenital and anal openings.
The ectoderm covers the entire outer surface of the developing embryo, except for the eventual umbilical region.
This germ layer, along with the dermatomes, lateral plate mesoderm, and neural crest cells formed during neurulation, eventually form the skin, as well as several other vital structures, including the central and peripheral nervous systems.
The mesoderm germ layers organize into somites, which eventually give rise to muscle tissue, cartilage, bone, and subcutaneous tissue of the skin.
As a result of embryonic folding, the major body plan becomes established, and the three germ layers continue to differentiate, giving rise to their own tissues and organ systems.
This video explains the three different types of embryonic tissue including the ectoderm, mesoderm, and endoderm as well as what the layers give rise to
- published: 24 Jun 2014
- views: 6635
Note: Morula comes before blastula and gastrula
Also discussing production of blastula, gastrula, and morula.
- published: 13 Mar 2012
- views: 16063
The development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres. The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus. An ovum is fertilized in a fallopian tube through which it travels into the uterus. In humans, the embryo is defined as the product of conception after it is implanted in the uterus wall through the eighth week of development. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation. However, animals which develop in eggs outside the mother's body are usually referred to as embryos throughout development, e.g. one would refer to a chick embryo, not a "chick fetus" even at late stages.
During gastrulation the cells of the blastula undergo coordinated processes of cell division, invasion, and/or migration to form two (diploblastic) or three (triploblastic) tissue layers. In triploblastic organisms, the three germ layers are called endoderm, ectoderm, and mesoderm. The position and arrangement of the germ layers are highly species-specific, however, depending on the type of embryo produced. In vertebrates, a special population of embryonic cells called the neural crest has been proposed as a "fourth germ layer", and is thought to have been an important novelty in the evolution of head structures.
The endoderm forms: the stomach, the colon, the liver, the pancreas, the urinary bladder, the lining of the urethra, the epithelial parts of trachea, the lungs, the pharynx, the thyroid, the parathyroid, and the intestines.
The mesoderm forms: skeletal muscle, the skeleton, the dermis of skin, connective tissue, the urogenital system, the heart, blood (lymph cells), the kidney, and the spleen.
The ectoderm forms: the central nervous system, the lens of the eye, cranial and sensory, the ganglia and nerves, pigment cells, head connective tissues, the epidermis, hair, and mammary glands.
- published: 28 Feb 2013
- views: 108550
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled with genetic labeling in the mouse embryo to uncover the behavior and contribution of the visceral endoderm in morphogenesis of the gut endoderm.
- published: 27 Oct 2011
- views: 1781
This video provides an overview of the protocols used for inducting human pluripotent stem cells in to definitive endoderm in just 48 hours using the Gibco PSC Definitive Endoderm Induction Kit. See how to get definitive endoderm cells in just two days.
http://www.lifetechnologies.com/us/en/home/life-science/stem-cell-research/stem-cell-differentiation/culture-systems-reagents-for-definitive-endoderm-differentiation.html?CID=fl-we117409-2
- published: 28 Jul 2015
- views: 527
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.. Endoderm Meaning. How to pronounce, definition audio dictionary. How to say endoderm. Powered by MaryTTS, Wiktionary
- published: 23 Apr 2015
- views: 82
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
By the end of the second week of development, the bilaminar embryonic disc, consisting of the hypoblast and epiblast, has formed.
Throughout the third week of development, this bilaminar disc differentiates to establish three primary germ layers, in a process known as gastrulation.
Approximately 15 days after fertilization, a thickened structure forms along the midline in the epiblast, near the caudal end of the bilaminar embryonic disc. This is called the primitive streak.
At this stage, the formation of the primitive streak defines the major body axes of the embryo, including the cranial end (towards the head) and caudal end (towards the tail) as well as the left and right sides of the embryo.
At the cranial end of the embryonic disc, the primitive streak expands to create a primitive node, which contains a circular depression, known as a primitive pit. The primitive pit is continuous with a groove, known as the primitive groove, which runs caudally along the midline of the primitive streak.
Once the primitive groove has formed, cells of the epiblast migrate inwards towards the streak, detach from the epiblast, and slip beneath into the interior of the embryonic disc. This process is known as invagination.
The first cells to invaginate through the primitive groove invade the hypoblast, and displace its cells. The hypoblast cells are eventually completely replaced by a new cell layer, which is referred to as the definitive endoderm.
By day 16, the majority of the hypoblast has been replaced. Some of the invaginated epiblast cells remain in the space between the epiblast and newly formed definitive endoderm.
These cells form a germ layer known as the mesoderm, which subsequently forms the notochord, the basis for the axial skeleton.
Once the formation of the definitive endoderm and mesoderm is complete, epiblast cells no longer migrate towards the primitive streak.
At this point, the remaining cells of the epiblast are referred to as the ectoderm, and form the third germ layer.
The ectoderm forms from the cranial to the caudal end of the embryo, such that by the end of the third week, the three primary germ layers complete the embryonic disc.
The gastrulation process is finally complete.
- published: 28 Aug 2014
- views: 262982
Endoderm
Endoderm is one of the three primary germ layers in the very early human embryo. The other two layers are the ectoderm (outside layer) and mesoderm (middle layer), with the endoderm being the innermost layer. Cells migrating inward along the archenteron form the inner layer of the gastrula, which develops into the endoderm.
The endoderm consists at first of flattened cells, which subsequently become columnar. It forms the epithelial lining of multiple systems.
Production
The following chart shows the products produced by the endoderm. The embryonic endoderm develops into the interior linings of two tubes in the body, the digestive and respiratory tube.
Liver and pancreas cells are believed to derive from a common precursor.
In humans,the endoderm can differentiate into distinguishable organs after 5 weeks of embryonic development.
Additional images
Section through the embryo.
Section through the embryo.
Section through ovum imbedded in the uterine decidua
Section through ovum imbedded in the uterine decidua
This page contains text from Wikipedia, the Free Encyclopedia -
https://wn.com/Endoderm
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
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2:50General Embryology - Detailed Animation On Embryonic Folding
General Embryology - Detailed Animation On Embryonic FoldingGeneral Embryology - Detailed Animation On Embryonic Folding
Animation is derived from Primal Anatomy & Physiology Online Course. You may purchase the course at http://primalonlinelearning.com/ Embryonic folding is the process of converting the embryo from a flat disc, into a cylinder. This cylinder consists of three main layers, derived from the trilaminar embryonic disc: the endoderm in the center, the ectoderm on the outside, and the mesoderm, which is found between the two layers. During the fourth week of development, folding of the embryo occurs as a result of the differential rates of growth of the embryonic structures. The embryonic disc and amnion grow rapidly, however, growth of the yolk sac is much slower. Embryonic folding occurs in two planes: the horizontal plane, which results in the development of two lateral body folds, and the median sagittal plane, which causes the longitudinal cranial (head fold) and the caudal (tail fold) of the embryo to develop. As folding continues simultaneously in both planes, the result is a very rapid development of the embryo. The endoderm of the trilaminar disc is mainly responsible for the formation of the epithelial lining and glands of the gastrointestinal tract. As the lateral, cranial and caudal folds of the endoderm fold towards the midline, they fuse, incorporating the dorsal part of the yolk sac to create the primitive gut tube. The gut tube is divided into three main parts: the foregut, midgut, and hindgut. The foregut can be seen at the cranial end of the embryo and is temporarily closed by a membrane, called the oropharyngeal membrane. At the end of the fourth week of development, the oropharyngeal membrane ruptures to connect the future oral cavity with the pharynx. Until the fifth week of development, the midgut is connected to the yolk sac, which narrows into a stalk known as the vitelline duct, as embryonic folding continues. Eventually, the yolk sac constricts and detaches from the midgut, and the midgut seals. The caudal end of the hindgut is also temporarily closed by a membrane, called the cloacal membrane, which separates the upper and lower parts of the anal canal. The cloacal membrane ruptures during the seventh week of development to form the urogenital and anal openings. The ectoderm covers the entire outer surface of the developing embryo, except for the eventual umbilical region. This germ layer, along with the dermatomes, lateral plate mesoderm, and neural crest cells formed during neurulation, eventually form the skin, as well as several other vital structures, including the central and peripheral nervous systems. The mesoderm germ layers organize into somites, which eventually give rise to muscle tissue, cartilage, bone, and subcutaneous tissue of the skin. As a result of embryonic folding, the major body plan becomes established, and the three germ layers continue to differentiate, giving rise to their own tissues and organ systems. -
5:36Embryonic Tissues
Embryonic TissuesEmbryonic Tissues
This video explains the three different types of embryonic tissue including the ectoderm, mesoderm, and endoderm as well as what the layers give rise to -
1:47Biolgy Germ Layers Endoderm Mesoderm Ectoderm
Biolgy Germ Layers Endoderm Mesoderm EctodermBiolgy Germ Layers Endoderm Mesoderm Ectoderm
Note: Morula comes before blastula and gastrula Also discussing production of blastula, gastrula, and morula. -
2:51Development of Zygote
Development of ZygoteDevelopment of Zygote
The development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres. The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus. An ovum is fertilized in a fallopian tube through which it travels into the uterus. In humans, the embryo is defined as the product of conception after it is implanted in the uterus wall through the eighth week of development. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation. However, animals which develop in eggs outside the mother's body are usually referred to as embryos throughout development, e.g. one would refer to a chick embryo, not a "chick fetus" even at late stages. During gastrulation the cells of the blastula undergo coordinated processes of cell division, invasion, and/or migration to form two (diploblastic) or three (triploblastic) tissue layers. In triploblastic organisms, the three germ layers are called endoderm, ectoderm, and mesoderm. The position and arrangement of the germ layers are highly species-specific, however, depending on the type of embryo produced. In vertebrates, a special population of embryonic cells called the neural crest has been proposed as a "fourth germ layer", and is thought to have been an important novelty in the evolution of head structures. The endoderm forms: the stomach, the colon, the liver, the pancreas, the urinary bladder, the lining of the urethra, the epithelial parts of trachea, the lungs, the pharynx, the thyroid, the parathyroid, and the intestines. The mesoderm forms: skeletal muscle, the skeleton, the dermis of skin, connective tissue, the urogenital system, the heart, blood (lymph cells), the kidney, and the spleen. The ectoderm forms: the central nervous system, the lens of the eye, cranial and sensory, the ganglia and nerves, pigment cells, head connective tissues, the epidermis, hair, and mammary glands. -
5:22Endoderm Formation: Not So Black and White Anymore
Endoderm Formation: Not So Black and White AnymoreEndoderm Formation: Not So Black and White Anymore
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled with genetic labeling in the mouse embryo to uncover the behavior and contribution of the visceral endoderm in morphogenesis of the gut endoderm. -
3:42How to induce pluripotent stem cells in to definitive endoderm
How to induce pluripotent stem cells in to definitive endodermHow to induce pluripotent stem cells in to definitive endoderm
This video provides an overview of the protocols used for inducting human pluripotent stem cells in to definitive endoderm in just 48 hours using the Gibco PSC Definitive Endoderm Induction Kit. See how to get definitive endoderm cells in just two days. http://www.lifetechnologies.com/us/en/home/life-science/stem-cell-research/stem-cell-differentiation/culture-systems-reagents-for-definitive-endoderm-differentiation.html?CID=fl-we117409-2 -
0:29Endoderm Meaning
Endoderm MeaningEndoderm Meaning
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.. Endoderm Meaning. How to pronounce, definition audio dictionary. How to say endoderm. Powered by MaryTTS, Wiktionary -
2:09Germ Layer Derivatives
Germ Layer DerivativesGerm Layer Derivatives
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1:4149.General Embryology - Derivatives of endoderm
49.General Embryology - Derivatives of endoderm -
3:18General Embryology - Detailed Animation On Gastrulation
General Embryology - Detailed Animation On GastrulationGeneral Embryology - Detailed Animation On Gastrulation
Animation is derived from Primal Anatomy & Physiology Online Course. You may purchase the course at http://primalonlinelearning.com/ By the end of the second week of development, the bilaminar embryonic disc, consisting of the hypoblast and epiblast, has formed. Throughout the third week of development, this bilaminar disc differentiates to establish three primary germ layers, in a process known as gastrulation. Approximately 15 days after fertilization, a thickened structure forms along the midline in the epiblast, near the caudal end of the bilaminar embryonic disc. This is called the primitive streak. At this stage, the formation of the primitive streak defines the major body axes of the embryo, including the cranial end (towards the head) and caudal end (towards the tail) as well as the left and right sides of the embryo. At the cranial end of the embryonic disc, the primitive streak expands to create a primitive node, which contains a circular depression, known as a primitive pit. The primitive pit is continuous with a groove, known as the primitive groove, which runs caudally along the midline of the primitive streak. Once the primitive groove has formed, cells of the epiblast migrate inwards towards the streak, detach from the epiblast, and slip beneath into the interior of the embryonic disc. This process is known as invagination. The first cells to invaginate through the primitive groove invade the hypoblast, and displace its cells. The hypoblast cells are eventually completely replaced by a new cell layer, which is referred to as the definitive endoderm. By day 16, the majority of the hypoblast has been replaced. Some of the invaginated epiblast cells remain in the space between the epiblast and newly formed definitive endoderm. These cells form a germ layer known as the mesoderm, which subsequently forms the notochord, the basis for the axial skeleton. Once the formation of the definitive endoderm and mesoderm is complete, epiblast cells no longer migrate towards the primitive streak. At this point, the remaining cells of the epiblast are referred to as the ectoderm, and form the third germ layer. The ectoderm forms from the cranial to the caudal end of the embryo, such that by the end of the third week, the three primary germ layers complete the embryonic disc. The gastrulation process is finally complete.
-
General Embryology - Detailed Animation On Embryonic Folding
Animation is derived from Primal Anatomy & Physiology Online Course. You may purchase the course at http://primalonlinelearning.com/ Embryonic folding is the process of converting the embryo from a flat disc, into a cylinder. This cylinder consists of three main layers, derived from the trilaminar embryonic disc: the endoderm in the center, the ectoderm on the outside, and the mesoderm, which is found between the two layers. During the fourth week of development, folding of the embryo occurs as a result of the differential rates of growth of the embryonic structures. The embryonic disc and amnion grow rapidly, however, growth of the yolk sac is much slower. Embryonic folding occurs in two planes: the horizontal plane, which results in the development of two lateral body folds, and ...
published: 04 Oct 2014 -
Embryonic Tissues
This video explains the three different types of embryonic tissue including the ectoderm, mesoderm, and endoderm as well as what the layers give rise to
published: 24 Jun 2014 -
Biolgy Germ Layers Endoderm Mesoderm Ectoderm
Note: Morula comes before blastula and gastrula Also discussing production of blastula, gastrula, and morula.
published: 13 Mar 2012 -
Development of Zygote
The development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres. The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus. An ovum is fertilized in a fallopian tube through which it travels into the uterus. In humans, the embryo is defined as the product of conception after it is implanted in the uterus wall through the eighth week of development. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestat...
published: 28 Feb 2013 -
Endoderm Formation: Not So Black and White Anymore
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled with genetic labeling in the mouse embryo to uncover the behavior and contribution of the visceral endoderm in morphogenesis of the gut endoderm.
published: 27 Oct 2011 -
How to induce pluripotent stem cells in to definitive endoderm
This video provides an overview of the protocols used for inducting human pluripotent stem cells in to definitive endoderm in just 48 hours using the Gibco PSC Definitive Endoderm Induction Kit. See how to get definitive endoderm cells in just two days. http://www.lifetechnologies.com/us/en/home/life-science/stem-cell-research/stem-cell-differentiation/culture-systems-reagents-for-definitive-endoderm-differentiation.html?CID=fl-we117409-2
published: 28 Jul 2015 -
Endoderm Meaning
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.. Endoderm Meaning. How to pronounce, definition audio dictionary. How to say endoderm. Powered by MaryTTS, Wiktionary
published: 23 Apr 2015 -
Germ Layer Derivatives
published: 20 Jul 2014 -
-
General Embryology - Detailed Animation On Gastrulation
Animation is derived from Primal Anatomy & Physiology Online Course. You may purchase the course at http://primalonlinelearning.com/ By the end of the second week of development, the bilaminar embryonic disc, consisting of the hypoblast and epiblast, has formed. Throughout the third week of development, this bilaminar disc differentiates to establish three primary germ layers, in a process known as gastrulation. Approximately 15 days after fertilization, a thickened structure forms along the midline in the epiblast, near the caudal end of the bilaminar embryonic disc. This is called the primitive streak. At this stage, the formation of the primitive streak defines the major body axes of the embryo, including the cranial end (towards the head) and caudal end (towards the tail) as wel...
published: 28 Aug 2014
General Embryology - Detailed Animation On Embryonic Folding
- Order: Reorder
- Duration: 2:50
- Updated: 04 Oct 2014
- views: 171634
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
Embryonic folding is the ...
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
Embryonic folding is the process of converting the embryo from a flat disc, into a cylinder.
This cylinder consists of three main layers, derived from the trilaminar embryonic disc: the endoderm in the center, the ectoderm on the outside, and the mesoderm, which is found between the two layers.
During the fourth week of development, folding of the embryo occurs as a result of the differential rates of growth of the embryonic structures. The embryonic disc and amnion grow rapidly, however, growth of the yolk sac is much slower.
Embryonic folding occurs in two planes: the horizontal plane, which results in the development of two lateral body folds, and the median sagittal plane, which causes the longitudinal cranial (head fold) and the caudal (tail fold) of the embryo to develop.
As folding continues simultaneously in both planes, the result is a very rapid development of the embryo.
The endoderm of the trilaminar disc is mainly responsible for the formation of the epithelial lining and glands of the gastrointestinal tract. As the lateral, cranial and caudal folds of the endoderm fold towards the midline, they fuse, incorporating the dorsal part of the yolk sac to create the primitive gut tube.
The gut tube is divided into three main parts: the foregut, midgut, and hindgut.
The foregut can be seen at the cranial end of the embryo and is temporarily closed by a membrane, called the oropharyngeal membrane. At the end of the fourth week of development, the oropharyngeal membrane ruptures to connect the future oral cavity with the pharynx.
Until the fifth week of development, the midgut is connected to the yolk sac, which narrows into a stalk known as the vitelline duct, as embryonic folding continues. Eventually, the yolk sac constricts and detaches from the midgut, and the midgut seals.
The caudal end of the hindgut is also temporarily closed by a membrane, called the cloacal membrane, which separates the upper and lower parts of the anal canal.
The cloacal membrane ruptures during the seventh week of development to form the urogenital and anal openings.
The ectoderm covers the entire outer surface of the developing embryo, except for the eventual umbilical region.
This germ layer, along with the dermatomes, lateral plate mesoderm, and neural crest cells formed during neurulation, eventually form the skin, as well as several other vital structures, including the central and peripheral nervous systems.
The mesoderm germ layers organize into somites, which eventually give rise to muscle tissue, cartilage, bone, and subcutaneous tissue of the skin.
As a result of embryonic folding, the major body plan becomes established, and the three germ layers continue to differentiate, giving rise to their own tissues and organ systems.
wn.com/General Embryology Detailed Animation On Embryonic Folding
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
Embryonic folding is the process of converting the embryo from a flat disc, into a cylinder.
This cylinder consists of three main layers, derived from the trilaminar embryonic disc: the endoderm in the center, the ectoderm on the outside, and the mesoderm, which is found between the two layers.
During the fourth week of development, folding of the embryo occurs as a result of the differential rates of growth of the embryonic structures. The embryonic disc and amnion grow rapidly, however, growth of the yolk sac is much slower.
Embryonic folding occurs in two planes: the horizontal plane, which results in the development of two lateral body folds, and the median sagittal plane, which causes the longitudinal cranial (head fold) and the caudal (tail fold) of the embryo to develop.
As folding continues simultaneously in both planes, the result is a very rapid development of the embryo.
The endoderm of the trilaminar disc is mainly responsible for the formation of the epithelial lining and glands of the gastrointestinal tract. As the lateral, cranial and caudal folds of the endoderm fold towards the midline, they fuse, incorporating the dorsal part of the yolk sac to create the primitive gut tube.
The gut tube is divided into three main parts: the foregut, midgut, and hindgut.
The foregut can be seen at the cranial end of the embryo and is temporarily closed by a membrane, called the oropharyngeal membrane. At the end of the fourth week of development, the oropharyngeal membrane ruptures to connect the future oral cavity with the pharynx.
Until the fifth week of development, the midgut is connected to the yolk sac, which narrows into a stalk known as the vitelline duct, as embryonic folding continues. Eventually, the yolk sac constricts and detaches from the midgut, and the midgut seals.
The caudal end of the hindgut is also temporarily closed by a membrane, called the cloacal membrane, which separates the upper and lower parts of the anal canal.
The cloacal membrane ruptures during the seventh week of development to form the urogenital and anal openings.
The ectoderm covers the entire outer surface of the developing embryo, except for the eventual umbilical region.
This germ layer, along with the dermatomes, lateral plate mesoderm, and neural crest cells formed during neurulation, eventually form the skin, as well as several other vital structures, including the central and peripheral nervous systems.
The mesoderm germ layers organize into somites, which eventually give rise to muscle tissue, cartilage, bone, and subcutaneous tissue of the skin.
As a result of embryonic folding, the major body plan becomes established, and the three germ layers continue to differentiate, giving rise to their own tissues and organ systems.
- published: 04 Oct 2014
- views: 171634
Embryonic Tissues
- Order: Reorder
- Duration: 5:36
- Updated: 24 Jun 2014
- views: 6635
This video explains the three different types of embryonic tissue including the ectoderm, mesoderm, and endoderm as well as what the layers give rise to
This video explains the three different types of embryonic tissue including the ectoderm, mesoderm, and endoderm as well as what the layers give rise to
wn.com/Embryonic Tissues
This video explains the three different types of embryonic tissue including the ectoderm, mesoderm, and endoderm as well as what the layers give rise to
- published: 24 Jun 2014
- views: 6635
Biolgy Germ Layers Endoderm Mesoderm Ectoderm
- Order: Reorder
- Duration: 1:47
- Updated: 13 Mar 2012
- views: 16063
Note: Morula comes before blastula and gastrula
Also discussing production of blastula, gastrula, and morula.
Note: Morula comes before blastula and gastrula
Also discussing production of blastula, gastrula, and morula.
wn.com/Biolgy Germ Layers Endoderm Mesoderm Ectoderm
Note: Morula comes before blastula and gastrula
Also discussing production of blastula, gastrula, and morula.
- published: 13 Mar 2012
- views: 16063
Development of Zygote
- Order: Reorder
- Duration: 2:51
- Updated: 28 Feb 2013
- views: 108550
The development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. The blastula stage typicall...
The development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres. The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus. An ovum is fertilized in a fallopian tube through which it travels into the uterus. In humans, the embryo is defined as the product of conception after it is implanted in the uterus wall through the eighth week of development. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation. However, animals which develop in eggs outside the mother's body are usually referred to as embryos throughout development, e.g. one would refer to a chick embryo, not a "chick fetus" even at late stages.
During gastrulation the cells of the blastula undergo coordinated processes of cell division, invasion, and/or migration to form two (diploblastic) or three (triploblastic) tissue layers. In triploblastic organisms, the three germ layers are called endoderm, ectoderm, and mesoderm. The position and arrangement of the germ layers are highly species-specific, however, depending on the type of embryo produced. In vertebrates, a special population of embryonic cells called the neural crest has been proposed as a "fourth germ layer", and is thought to have been an important novelty in the evolution of head structures.
The endoderm forms: the stomach, the colon, the liver, the pancreas, the urinary bladder, the lining of the urethra, the epithelial parts of trachea, the lungs, the pharynx, the thyroid, the parathyroid, and the intestines.
The mesoderm forms: skeletal muscle, the skeleton, the dermis of skin, connective tissue, the urogenital system, the heart, blood (lymph cells), the kidney, and the spleen.
The ectoderm forms: the central nervous system, the lens of the eye, cranial and sensory, the ganglia and nerves, pigment cells, head connective tissues, the epidermis, hair, and mammary glands.
wn.com/Development Of Zygote
The development of the zygote into an embryo proceeds through specific recognizable stages of blastula, gastrula, and organogenesis. The blastula stage typically features a fluid-filled cavity, the blastocoel, surrounded by a sphere or sheet of cells, also called blastomeres. The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus. An ovum is fertilized in a fallopian tube through which it travels into the uterus. In humans, the embryo is defined as the product of conception after it is implanted in the uterus wall through the eighth week of development. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching. In humans, this is from the eighth week of gestation. However, animals which develop in eggs outside the mother's body are usually referred to as embryos throughout development, e.g. one would refer to a chick embryo, not a "chick fetus" even at late stages.
During gastrulation the cells of the blastula undergo coordinated processes of cell division, invasion, and/or migration to form two (diploblastic) or three (triploblastic) tissue layers. In triploblastic organisms, the three germ layers are called endoderm, ectoderm, and mesoderm. The position and arrangement of the germ layers are highly species-specific, however, depending on the type of embryo produced. In vertebrates, a special population of embryonic cells called the neural crest has been proposed as a "fourth germ layer", and is thought to have been an important novelty in the evolution of head structures.
The endoderm forms: the stomach, the colon, the liver, the pancreas, the urinary bladder, the lining of the urethra, the epithelial parts of trachea, the lungs, the pharynx, the thyroid, the parathyroid, and the intestines.
The mesoderm forms: skeletal muscle, the skeleton, the dermis of skin, connective tissue, the urogenital system, the heart, blood (lymph cells), the kidney, and the spleen.
The ectoderm forms: the central nervous system, the lens of the eye, cranial and sensory, the ganglia and nerves, pigment cells, head connective tissues, the epidermis, hair, and mammary glands.
- published: 28 Feb 2013
- views: 108550
Endoderm Formation: Not So Black and White Anymore
- Order: Reorder
- Duration: 5:22
- Updated: 27 Oct 2011
- views: 1781
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled with genetic labeling in the mouse embryo to uncover the behavior and...
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled with genetic labeling in the mouse embryo to uncover the behavior and contribution of the visceral endoderm in morphogenesis of the gut endoderm.
wn.com/Endoderm Formation Not So Black And White Anymore
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled with genetic labeling in the mouse embryo to uncover the behavior and contribution of the visceral endoderm in morphogenesis of the gut endoderm.
- published: 27 Oct 2011
- views: 1781
How to induce pluripotent stem cells in to definitive endoderm
- Order: Reorder
- Duration: 3:42
- Updated: 28 Jul 2015
- views: 527
This video provides an overview of the protocols used for inducting human pluripotent stem cells in to definitive endoderm in just 48 hours using the Gibco PSC ...
This video provides an overview of the protocols used for inducting human pluripotent stem cells in to definitive endoderm in just 48 hours using the Gibco PSC Definitive Endoderm Induction Kit. See how to get definitive endoderm cells in just two days.
http://www.lifetechnologies.com/us/en/home/life-science/stem-cell-research/stem-cell-differentiation/culture-systems-reagents-for-definitive-endoderm-differentiation.html?CID=fl-we117409-2
wn.com/How To Induce Pluripotent Stem Cells In To Definitive Endoderm
This video provides an overview of the protocols used for inducting human pluripotent stem cells in to definitive endoderm in just 48 hours using the Gibco PSC Definitive Endoderm Induction Kit. See how to get definitive endoderm cells in just two days.
http://www.lifetechnologies.com/us/en/home/life-science/stem-cell-research/stem-cell-differentiation/culture-systems-reagents-for-definitive-endoderm-differentiation.html?CID=fl-we117409-2
- published: 28 Jul 2015
- views: 527
Endoderm Meaning
- Order: Reorder
- Duration: 0:29
- Updated: 23 Apr 2015
- views: 82
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of...
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.. Endoderm Meaning. How to pronounce, definition audio dictionary. How to say endoderm. Powered by MaryTTS, Wiktionary
wn.com/Endoderm Meaning
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.. Endoderm Meaning. How to pronounce, definition audio dictionary. How to say endoderm. Powered by MaryTTS, Wiktionary
- published: 23 Apr 2015
- views: 82
Germ Layer Derivatives
- Order: Reorder
- Duration: 2:09
- Updated: 20 Jul 2014
- views: 6987
- published: 20 Jul 2014
- views: 6987
49.General Embryology - Derivatives of endoderm
- Order: Reorder
- Duration: 1:41
- Updated: 10 Feb 2014
- views: 1125
General Embryology - Detailed Animation On Gastrulation
- Order: Reorder
- Duration: 3:18
- Updated: 28 Aug 2014
- views: 262982
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
By the end of the second ...
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
By the end of the second week of development, the bilaminar embryonic disc, consisting of the hypoblast and epiblast, has formed.
Throughout the third week of development, this bilaminar disc differentiates to establish three primary germ layers, in a process known as gastrulation.
Approximately 15 days after fertilization, a thickened structure forms along the midline in the epiblast, near the caudal end of the bilaminar embryonic disc. This is called the primitive streak.
At this stage, the formation of the primitive streak defines the major body axes of the embryo, including the cranial end (towards the head) and caudal end (towards the tail) as well as the left and right sides of the embryo.
At the cranial end of the embryonic disc, the primitive streak expands to create a primitive node, which contains a circular depression, known as a primitive pit. The primitive pit is continuous with a groove, known as the primitive groove, which runs caudally along the midline of the primitive streak.
Once the primitive groove has formed, cells of the epiblast migrate inwards towards the streak, detach from the epiblast, and slip beneath into the interior of the embryonic disc. This process is known as invagination.
The first cells to invaginate through the primitive groove invade the hypoblast, and displace its cells. The hypoblast cells are eventually completely replaced by a new cell layer, which is referred to as the definitive endoderm.
By day 16, the majority of the hypoblast has been replaced. Some of the invaginated epiblast cells remain in the space between the epiblast and newly formed definitive endoderm.
These cells form a germ layer known as the mesoderm, which subsequently forms the notochord, the basis for the axial skeleton.
Once the formation of the definitive endoderm and mesoderm is complete, epiblast cells no longer migrate towards the primitive streak.
At this point, the remaining cells of the epiblast are referred to as the ectoderm, and form the third germ layer.
The ectoderm forms from the cranial to the caudal end of the embryo, such that by the end of the third week, the three primary germ layers complete the embryonic disc.
The gastrulation process is finally complete.
wn.com/General Embryology Detailed Animation On Gastrulation
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the course at
http://primalonlinelearning.com/
By the end of the second week of development, the bilaminar embryonic disc, consisting of the hypoblast and epiblast, has formed.
Throughout the third week of development, this bilaminar disc differentiates to establish three primary germ layers, in a process known as gastrulation.
Approximately 15 days after fertilization, a thickened structure forms along the midline in the epiblast, near the caudal end of the bilaminar embryonic disc. This is called the primitive streak.
At this stage, the formation of the primitive streak defines the major body axes of the embryo, including the cranial end (towards the head) and caudal end (towards the tail) as well as the left and right sides of the embryo.
At the cranial end of the embryonic disc, the primitive streak expands to create a primitive node, which contains a circular depression, known as a primitive pit. The primitive pit is continuous with a groove, known as the primitive groove, which runs caudally along the midline of the primitive streak.
Once the primitive groove has formed, cells of the epiblast migrate inwards towards the streak, detach from the epiblast, and slip beneath into the interior of the embryonic disc. This process is known as invagination.
The first cells to invaginate through the primitive groove invade the hypoblast, and displace its cells. The hypoblast cells are eventually completely replaced by a new cell layer, which is referred to as the definitive endoderm.
By day 16, the majority of the hypoblast has been replaced. Some of the invaginated epiblast cells remain in the space between the epiblast and newly formed definitive endoderm.
These cells form a germ layer known as the mesoderm, which subsequently forms the notochord, the basis for the axial skeleton.
Once the formation of the definitive endoderm and mesoderm is complete, epiblast cells no longer migrate towards the primitive streak.
At this point, the remaining cells of the epiblast are referred to as the ectoderm, and form the third germ layer.
The ectoderm forms from the cranial to the caudal end of the embryo, such that by the end of the third week, the three primary germ layers complete the embryonic disc.
The gastrulation process is finally complete.
- published: 28 Aug 2014
- views: 262982
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2:50
General Embryology - Detailed Animation On Embryonic Folding
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the ...
published: 04 Oct 2014
General Embryology - Detailed Animation On Embryonic Folding
General Embryology - Detailed Animation On Embryonic Folding
- Report rights infringement
- published: 04 Oct 2014
- views: 171634
5:36
Embryonic Tissues
This video explains the three different types of embryonic tissue including the ectoderm, ...
published: 24 Jun 2014
Embryonic Tissues
Embryonic Tissues
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- published: 24 Jun 2014
- views: 6635
1:47
Biolgy Germ Layers Endoderm Mesoderm Ectoderm
Note: Morula comes before blastula and gastrula
Also discussing production of blastula, g...
published: 13 Mar 2012
Biolgy Germ Layers Endoderm Mesoderm Ectoderm
Biolgy Germ Layers Endoderm Mesoderm Ectoderm
- Report rights infringement
- published: 13 Mar 2012
- views: 16063
2:51
Development of Zygote
The development of the zygote into an embryo proceeds through specific recognizable stages...
published: 28 Feb 2013
Development of Zygote
Development of Zygote
- Report rights infringement
- published: 28 Feb 2013
- views: 108550
5:22
Endoderm Formation: Not So Black and White Anymore
Dr. Hadjantonakis discusses the work of her group on using live-imaging approaches coupled...
published: 27 Oct 2011
Endoderm Formation: Not So Black and White Anymore
Endoderm Formation: Not So Black and White Anymore
- Report rights infringement
- published: 27 Oct 2011
- views: 1781
3:42
How to induce pluripotent stem cells in to definitive endoderm
This video provides an overview of the protocols used for inducting human pluripotent stem...
published: 28 Jul 2015
How to induce pluripotent stem cells in to definitive endoderm
How to induce pluripotent stem cells in to definitive endoderm
- Report rights infringement
- published: 28 Jul 2015
- views: 527
0:29
Endoderm Meaning
Video shows what endoderm means. One of the three tissue layers in the embryo of a metazoa...
published: 23 Apr 2015
Endoderm Meaning
Endoderm Meaning
- Report rights infringement
- published: 23 Apr 2015
- views: 82
2:09
Germ Layer Derivatives
published: 20 Jul 2014
Germ Layer Derivatives
Germ Layer Derivatives
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- published: 20 Jul 2014
- views: 6987
1:41
49.General Embryology - Derivatives of endoderm
General Embryology - احمد كمال
للمزيد زورونا
https://www.facebook.com/MUST.Medicine.World
published: 10 Feb 2014
49.General Embryology - Derivatives of endoderm
49.General Embryology - Derivatives of endoderm
- Report rights infringement
- published: 10 Feb 2014
- views: 1125
3:18
General Embryology - Detailed Animation On Gastrulation
Animation is derived from Primal Anatomy & Physiology Online Course.
You may purchase the ...
published: 28 Aug 2014
General Embryology - Detailed Animation On Gastrulation
General Embryology - Detailed Animation On Gastrulation
- Report rights infringement
- published: 28 Aug 2014
- views: 262982
General Embryology - Detailed Animation On Embryon...
Embryonic Tissues...
Biolgy Germ Layers Endoderm Mesoderm Ectoderm...
Development of Zygote...
Endoderm Formation: Not So Black and White Anymore...
How to induce pluripotent stem cells in to definit...
Endoderm Meaning...
Germ Layer Derivatives...
49.General Embryology - Derivatives of endoderm...
General Embryology - Detailed Animation On Gastrul...
-
Lyrics list:lyrics
-
End
-
Und Warum
-
Ignite
End
It's The End Of The World As We Know It lyrics
That's great, it starts with an earthquake, birds and
snakes, an aeroplane and Lenny Bruce is not afraid.
Eye of a hurricane, listen to yourself churn - world
serves its own needs, dummy serve your own needs. Feed
it off an aux speak, grunt, no, strength, Ladder
start to clatter with fear fight down height. Wire
in a fire, representing seven games, a government
for hire and a combat site. Left of west and coming in
a hurry with the furies breathing down your neck. Team
by team reporters baffled, trumped, tethered cropped.
Look at that low playing! Fine, then. Uh oh,
overflow, population, common food, but it'll do. Save
yourself, serve yourself. World serves its own needs,
listen to your heart bleed dummy with the rapture and
the revered and the right, right. You vitriolic,
patriotic, slam, fight, bright light, feeling pretty
psyched.
It's the end of the world as we know it.
It's the end of the world as we know it.
It's the end of the world as we know it and I feel fine.
Six o'clock - TV hour. Don't get caught in foreign
towers. Slash and burn, return, listen to yourself
churn. Locking in, uniforming, book burning, blood
letting. Every motive escalate. Automotive incinerate.
Light a candle, light a votive. Step down, step down.
Watch your heel crush, crushed, uh-oh, this means no
fear cavalier. Renegade steer clear! A tournament,
tournament, a tournament of lies. Offer me solutions,
offer me alternatives and I decline.
It's the end of the world as we know it.
It's the end of the world as we know it.
It's the end of the world as we know it and I feel fine.
The other night I dreamt of knives, continental
drift divide. Mountains sit in a line, Leonard
Bernstein. Leonid Brezhnev, Lenny Bruce and Lester
Bangs. Birthday party, cheesecake, jelly bean, boom! You
symbiotic, patriotic, slam book neck, right? Right.
It's the end of the world as we know it.
It's the end of the world as we know it.
It's the end of the world as we know it and I feel
fine...fine...
photo: US Fema
Congress Overwhelmingly Approves Veto Of Saudi 9/11 Bill
Edit WorldNews.com 28 Sep 2016
officials to similar lawsuits abroad, the report said. “Overriding a presidential veto is something we don’t take lightly, but it was important in this case that the families of the victims of 9/11 be allowed to pursue justice, even if that pursuit causes some diplomatic discomforts,” Sen. Charles E. Schumer (D-N.Y.), who co-authored the bill with Sen. John Cornyn (R-Tex.), said in a statement ... officials overseas at risk....
photo: Creative Commons / Georges Biard
Did Angelina Jolie Cheat On Brad Pitt?
Edit Opposing Views 28 Sep 2016
After rumors circulated that Brad Pitt was cheating on Angelina Jolie prior to their recent divorce, a new report suggests that Jolie may have actually cheated on Pitt. According to Radar Online, Jolie may have been getting a little too cozy with her 'Tourist' costar Johnny Depp. ... Depp recently went through his own divorce from actress Amber Heard ... He is my love, my best friend, the only one that I need ... With all my love Marion"....
photo: Creative Commons / lasta29
[UPDATE]: Malaysia Airlines MH17 Downed By Missile From Russian-Backed Rebels: Report
Edit WorldNews.com 28 Sep 2016
The missile that struck a Malaysia Airlines plane traveling from Amsterdam to Kuala Lumpur in 2014 killing all 298 people on board was fired from territory controlled by Russian-backed rebels, international prosecutors investing the incident told BBC News Wednesday.Prosecutors said the missile launcher was brought into Ukraine from Russia and later ......
photo: US DoS
Kerry threatens Russia with end to joint Syria diplomacy
Edit The Roanoke Times 28 Sep 2016
WASHINGTON (AP) — Secretary of State John Kerry threatened on Wednesday to end all cooperation between the United States and Russia to stop Syria's civil war, unless Russian and Syrian government attacks on Aleppo end. More than 250 people are believed to have been killed in the besieged city in the last week ... ultimatum in Syria's 5½-year conflict. Many have gone unfulfilled, including President Barack Obama's declaration that the U.S ... ....
photo:
Missile That Downed Malaysian Airlines Plane Over Ukraine Came From Russia: Report
Edit WorldNews.com 28 Sep 2016
The Washington Post reports Wednesday the missile that downed a Malaysian Airlines plane over Ukraine came from Russia, according to a probe of the incident.The findings could lead to criminal charges over the disaster, which killed all 298 people aboard the flight from Amsterdam to Kuala Lumpur. WN.com will update this breaking news story.....
« back to news headlines
Cellular Dynamics Announces Launch of iCell® Hepatoblasts to Enable Research into Therapies That Stimulate Liver Regeneration (Cellular Dynamics International Inc)
Edit Public Technologies 22 Sep 2016
(Source. Cellular Dynamics International Inc). MADISON, Wis., September 22, 2016 - Cellular Dynamics International, Inc. (CDI), a FUJIFILM company, today announced the launch of iCell Hepatoblasts, liver progenitor cells generated from human induced pluripotent stem cells (iPSCs) ... CDI has cryopreserved iCell Hepatoblasts at the time point in differentiation between definitive endoderm and hepatocyte specification ... Quote ... About FUJIFILM....
CELLULAR DYNAMICS ANNOUNCES LAUNCH OF ICELL® HEPATOBLASTS TO ENABLE RESEARCH INTO THERAPIES THAT STIMULATE LIVER REGENERATION (Fujifilm Holdings America Corporation)
Edit Public Technologies 22 Sep 2016
(Source. Fujifilm Holdings America Corporation). Cellular Dynamics International, Inc. 525 Science Drive. Madison, WI 53711 USA. www.cellulardynamics.com. Cellular Dynamics Announces Launch of iCell® HepatoblaststoEnableResearch intoTherapies That Stimulate Liver Regeneration ... CDI has cryopreserved iCell Hepatoblasts at the time point in differentiation between definitive endoderm and hepatocyte specification ... Quote ... About FUJIFILM ... ###....
CELLULAR DYNAMICS ANNOUNCES LAUNCH OF ICELL® HEPATOBLASTS TO ENABLE RESEARCH INTO THERAPIES THAT STIMULATE LIVER REGENERATION (Fujifilm Medical Systems USA Inc)
Edit Public Technologies 22 Sep 2016
(Source. Fujifilm Medical Systems USA Inc). Cellular Dynamics International, Inc. 525 Science Drive. Madison, WI 53711 USA. www.cellulardynamics.com. Cellular Dynamics Announces Launch of iCell® HepatoblaststoEnableResearch intoTherapies That Stimulate Liver Regeneration ... CDI has cryopreserved iCell Hepatoblasts at the time point in differentiation between definitive endoderm and hepatocyte specification ... Quote ... About FUJIFILM ... ### ... Fujifilm....
Study Sets Standards for Evaluating Pluripotent Stem Cell Quality (Cincinnati Children's Hospital Medical Center)
Edit Public Technologies 06 Jul 2016
(Source. Cincinnati Children's Hospital Medical Center). Transformative Technology Not Quite Ready for Clinical Use. Thursday, June 09, 2016 ... Different Tools, Varied Results ... blood, male vs ... The Teratoma Test. Being pluripotent means iPSCs can generate cells from each of the three basic germ cell lines that form the body - endoderm (gut region), ectoderm (epidermis, nerve tissue, etc.) and mesoderm (muscles, blood cells, etc.) ... # ... phone....
Inside the ‘black box’ of human development
Edit The Guardian 05 Jun 2016
Twitter ... Many scientists see the 14-day rule as an anachronism ... Each argues that it will enable scientists to understand which genes are active during the crucial phase of gastrulation when the body plan is laid down and the three main tissue layers – the ectoderm, mesoderm and endoderm – are formed as the biological foundations for the specialised tissues of the nervous system, muscle and blood, and lungs and intestines, respectively....
VegT and Mix1 localization in frog embryos [Developmental Biology]>
Edit PNAS 17 May 2016
Protein expression of the transcription factor genes mix1 and vegt characterized the presumptive endoderm in embryos of the frogs Engystomops randi, Epipedobates machalilla, Gastrotheca riobambae, and Eleutherodactylus coqui, as in Xenopus laevis embryos. Protein VegT was detected in the animal hemisphere of the early blastula in all frogs, and only... ....
Scientists develop human embryos beyond implantation stage for first time (University of Cambridge)
Edit Public Technologies 04 May 2016
(Source. University of Cambridge) ... The blastocyst comprises three cell types. cells that will develop into the future body (which form the 'epiblast'), cells that will develop into the placenta and allow the embryo to attach to the womb, and cells that form the primitive endoderm that will ensure that the fetus's organs develop properly and will provide essential nutrients ... Left image ... Right image ... Reference. Shahbazi, MN et al ... (noodl....
Advance could help grow stem cells more safely (Brown University)
Edit Public Technologies 02 May 2016
(Source. Brown University). Nurturing stem cells atop a bed of mouse cells works well, but is a non-starter for transplants to patients - Brown University scientists are developing a synthetic bed instead. PROVIDENCE, R.I ... the endoderm, which becomes internal body structures such as the gastrointestinal tract; the mesoderm, which becomes many organ systems, including the heart; and the ectoderm, which becomes the nervous system ... (noodl....
Salk scientists uncover how a cell’s “fuel gauge” promotes healthy development (Salk Institute for Biological Studies)
Edit Public Technologies 25 Apr 2016
Normally, embryonic stem cells have the capacity to generate more specialized cells that belong to one of three broad groups termed germ layers-the endoderm, ectoderm and mesoderm-that can ultimately develop into all of the diverse cell types in an organism. However, the cells without a functioning AMPK pathway failed to efficiently make endoderm ......
Immortal Hydra Tears Its Skin Open Every Time It Needs A Mouth
Edit IFL Science 10 Mar 2016
The Hydra is best known as an ancient fearsome beast, a terrifying, multi-headed monster belonging to the mythical realm ... A new study in Biophysical Journal only serves to make this bizarre critter even stranger ... Its ectoderm is glowing green, while its endoderm is highlighted in magenta ... These GM Hydra have two fluorescent “tags,” one for the outer layer (ectoderm) and one for the inner layer (endoderm) ... Photo Gallery. ....
Cryptic "Garbage" Cell Turns Out To Be New Type Of Stem Cell
Edit IFL Science 10 Mar 2016
Pluripotent stem cells are heavily sought after by medical researchers who see them as a game-changer. With the ability to regenerate damaged tissue, including that found in the heart, brain, and pancreas, this perception may not be overblown. Now, a team of researchers have stumbled across a new type of stem cell ... iXEN cells, which stands for induced extraembryonic endoderm stem cells, are one such example ... Matej Kastelic/Shutterstock ... ....
UC San Diego Biophysicists Discover How Hydra Opens Its Mouth (UCSD - University of California - San Diego)
Edit Public Technologies 08 Mar 2016
(Source. UCSD - University of California - San Diego) ... The researchers report their findings in the current issue of Biophysical Journal ... Steele, who is a co-author of the paper, provided transgenic Hydra with green fluorescent and red fluorescent proteins tagged to cytoplasmic proteins in its ectodermal and endodermal epithelial cells, respectively ... tissue formation and patterning,' she said ... Original Document ... (noodl. 32506068) ....
Biomimetic human hepatic model by 3D bioprinting [Medical Sciences]>
Edit PNAS 23 Feb 2016
The functional maturation and preservation of hepatic cells derived from human induced pluripotent stem cells (hiPSCs) are essential to personalized in vitro drug screening and disease study. Major liver functions are tightly linked to the 3D assembly of hepatocytes, with the supporting cell types from both endodermal and mesodermal origins... ....
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