- published: 29 Sep 2014
- views: 92791
Red blood cells (RBCs), also called erythrocytes, are the most common type of blood cell and the vertebrate organism's principal means of delivering oxygen (O2) to the body tissues—via blood flow through the circulatory system. RBCs take up oxygen in the lungs or gills and release it into tissues while squeezing through the body's capillaries.
The cytoplasm of erythrocytes is rich in hemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red color of the cells. The cell membrane is composed of proteins and lipids, and this structure provides properties essential for physiological cell function such as deformability and stability while traversing the circulatory system and specifically the capillary network.
In humans, mature red blood cells are flexible and oval biconcave disks. They lack a cell nucleus and most organelles, in order to accommodate maximum space for hemoglobin; they can be viewed as sacks of hemoglobin, with a plasma membrane as the sack. Approximately 2.4 million new erythrocytes are produced per second in human adults. The cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages. Each circulation takes about 20 seconds. Approximately a quarter of the cells in the human body are red blood cells. Nearly half of the blood's volume (40% to 45%) is red blood cells.
A blood cell, also called a haematopoietic cell, hemocyte, or hematocyte, is a cell produced through hematopoiesis and found mainly in the blood. In mammals, these fall into three general categories:
Together, these three kinds of blood cells add up to a total 45% of the blood tissue by volume, with the remaining 55% of the volume composed of plasma, the liquid component of blood. This volume percentage hematocrit is measured by centrifuge or flow cytometry and is 45% of cells to total volume in males and 40% in females.
Haemoglobin (the main component of red blood cells) is an iron-containing protein that facilitates transportation of oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs.
Red blood cells primarily carry oxygen and collect carbon dioxide through the use of haemoglobin, and have a lifetime of about 120 days. In the process of being formed they go through a unipotent stem cell stage. They have the job alongside the white blood cells of protecting the healthy cells.
This video look at Erythropoesis as well as how components of erythrocytes are recycled. https://www.facebook.com/ArmandoHasudungan Support me: http://www.patreon.com/armando Instagram: http://instagram.com/armandohasudungan Twitter: https://twitter.com/Armando71021105
Want to see more cartoons by Bill? If you like THIS short, you'll LOVE Gary and the Goose.. http://www.youtube.com/watch?v=cV9wkjC39MY First off, when I created this video I didn't think it would be a big hit. I thought of it as a "oh, you know whatever" kind of project. Thanks for 160,000 VIEWS! Thats insane! ....and as always.. if you feel like it.... SUBSCRIBE!!!!!
Watch this video to learn about how the body makes red blood cells, which contain hemoglobin and carry oxygen throughout the body. Anemia occurs when there are too few red blood cells or not enough hemoglobin. Find out more about anemia and other blood disorders by visiting ASH's patient resources webpage http://hematology.org/Patients/. This animation was featured in the documentary film "Blood Detectives." To learn more about the film, visit http://www.hematology.org/Publications/Blood-Detectives/5246.aspx
Animation and explanation of the life cycle of a red blood cell.
This is a video describing various morphological abnormalities found in red blood cells, including changes in red cell size, shape, color, and distribution. I created this presentation with Google Slides. Image were created or taken from Wikimedia Commons I created this video with the YouTube Video Editor. ADDITIONAL TAGS: Macrocytosis Large As measured with MCV altered DNA synthesis MCV, things that alter DNA synthesis , B12/folate deficiency Liver disease Thyroid disease Chemotherapy Anti-retrovirals (AZT) Microcytosis Small Measured with MCV iron deficiency, thalassemia, lead poisoning measured with MCV, Iron deficiency, Thalassemias, Lead poisoning, Sideroblastic anemia Anisocytosis Wide range of RBC sizes High red cell distribution width (RDW) Hypochromasia with...
06) Red cells After plasma, red blood cells make up the next largest component of the blood stream, accounting for nearly all of the remaining 45% of blood volume. Red cells function to carry oxygen molecules to tissue cells throughout the body and carry away waste carbon dioxide from the tissue cells. The workhorse of the red cell is a small protein molecule called hemoglobin, which attaches to oxygen molecules in the capillaries of the lungs. Iron molecules are a critical component of the hemoglobin surface receptors, which bind to the oxygen molecule. Once oxygen molecules are released, the hemoglobin receptors pick up carbon dioxide molecules, which is a waste by-product formed in the tissue cells. Hitching a ride on the hemoglobin molecule the carbon dioxide molecules are carried...
Blood: Path of a Red Blood Cell http://www.britannica.com/eb/article-9015694/blood?source=yo utube_68270
Get your free audiobook or ebook: http://zaxo.space/sabk/35/en/B001D7C7PU/book Authoritative experts in transfusion medicine describe in critical detail the most important procedures for obtaining, selecting, and transfusing red blood cells to patients. The topics covered include such key issues as transfusion problems in the immunocompromised, the complications of autoantibodies, transfusion of infants with hemolytic disease, difficulties arising from solid organ transplantation, stem cell transfusions, and the challenges of massive transfusion. Also discussed are the use, limitations, and alternatives to autogeneic cells; long-term red cell transfusion; the management of adverse reactions to red cell transfusions; and the question of blood group antigens and their association with diseas...
Get your free audiobook or ebook: http://appgame.space/mabk/30/en/B00J742UOY/book The Vitamin B12 Solution: Your Essential Key To Healthy Red Blood Cells And Anemiacould a lack of vitamin B12 be the reason you're so tired or stressed? What if you were told that something found in your diet could prevent heart disease, memory loss or Alzheimer. If vitamin B12 deficiency is a concern, or you simply want to have a real understanding of this all too common issue, then The Vitamin B12 Solution is the one book that you should buy. The Vitamin B12 Solution Your Essential Key to Healthy Red Blood Cells and Anemia is the authority on all such matters. It is written in a way that allows the reader to understand the issue, and provides the most comprehensive coverage of the topic. The star-cells of t...
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Source: https://www.spreaker.com/user/medschoolradio/path-bites-the-red-cell-distribution-wid The RDW, or red cell distribution width, is a measure of how much the red cells vary in size. The official definition is "the standard deviation of the MCV" - the bigger the RDW, the more the cells vary in size. The RDW can be helpful in diagnosing different kinds of anemia. For example, in iron deficiency anemia, the RDW is increased (because as the patient’s iron continues to decline, each new wave of red cells gets smaller and smaller – so you have a pretty big range of sizes of red cells).
This is the submission for Group 63 in Anatomy 100 Fall 2016 term at Queen's University. This movie describes the pathway of a red blood cell from, and returning to, the heart.
Group 8: Andrew Hall, Paul Lapadula, Hayley McKay, Victoria Raguseo, & Yekeen Abu-Shiraz Narrated by Andrew Hall
The red blood cell, also called erythrocyte is a cellular component of blood, millions of which in the circulation of vertebrates give the blood its characteristic colour and carry oxygen from the lungs to the tissues. The mature human red blood cell is small, round, and biconcave; it appears dumbbell-shaped in profile. The cell is flexible and assumes a bell shape as it passes through extremely small blood vessels. It is covered with a membrane composed of lipids and proteins, lacks a nucleus, and contains hemoglobin—a red, iron-rich protein that binds oxygen. The function of the red cell and its hemoglobin is to carry oxygen from the lungs or gills to all the body tissues and to carry carbon dioxide, a waste product of metabolism, to the lungs, where it is excreted. In invertebrates, ox...
Red blood cells are erythrocytes The function of the erythrocytes is to carry oxygen from lungs to tissues and carbon dioxide from tissues to lungs. The percentage of blood which is composed of red cells is termed the haematocrit; this may be lowered in some forms of anaemia. Red cells are biconcave discs. This shape provides a large surface area for gaseous exchange and also gives the cell flexibility. Some capillaries are so small the red cells have to squeeze through by deforming their shape. Red cells are about 7 micrometres in diameter (i.e. 7 one thousandths of a millimetre). Every cubic millimetre (mm3) of blood contains about 5 million red blood cells.
Life Sciences Outreach Lecture Series at Harvard University - Physiology Videos produced by Leigh Stimolo, 2009
I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
PROPERTY OF THE INDIAN IMMUNOHEMATOLOGY INITIATIVE www.indianinitiative.org Susan Johnson, MSTM, MT(ASCP)SBB, MS, Associate Director of the Indian Immunohematology Initiative, demonstrates how to prepare a 3-5% red blood cell suspension that can be used in hemagglutination testing to determine blood group. www.indianinitiative.org Доступно с русскими субтитрами! Приготовление 3-5% клеточной суспензии.
This is the second part of the introduction to blood lesson for first year students.
You can find this video and other helpful videos/materials (practice sheet and questions) on my website: www.profroofs.com This is my presentation from my Anatomy & Physiology II (Bio 172) class at SUNY - Onondaga Community College. This lecture on Thursday, March 22, 2012 was during Unit 3 of the course. I discuss the life cycle of an erythrocyte (RBC), including how it is degraded after about 120 days and also begin explaining different blood types. You can contact me through YouTube or by email (jroufaiel@gmail.com) with questions.
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