- published: 07 Feb 2013
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In the heart, a ventricle is one of two large chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs. The atrium (an adjacent/upper heart chamber that is smaller than a ventricle) primes the pump. Interventricular means between the ventricles (for example the interventricular septum), while intraventricular means within one ventricle (for example an intraventricular block).
In a four-chambered heart, such as that in humans, there are two ventricles that operate in a double circulatory system: the right ventricle pumps blood into the pulmonary circulation to the lungs, and the left ventricle pumps blood into the systemic circulation through the aorta.
Ventricles have thicker walls than atria and generate higher blood pressures. The physiological load on the ventricles requiring pumping of blood throughout the body and lungs is much greater than the pressure generated by the atria to fill the ventricles. Further, the left ventricle has thicker walls than the right because it needs to pump blood to most of the body while the right ventricle fills only the lungs.
Ventricle may refer to:
The heart is a muscular organ in humans and other animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, and also assists in the removal of metabolic wastes. The heart is located in the middle compartment of the mediastinum in the chest.
In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria; and lower left and right ventricles. Commonly the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart. Fish in contrast have two chambers, an atrium and a ventricle, while reptiles have three chambers. In a healthy heart blood flows one way through the heart due to heart valves, which prevent backflow. The heart is enclosed in a protective sac, the pericardium, which also contains a small amount of fluid. The wall of the heart is made up of three layers: epicardium, myocardium, and endocardium.
http://www.anatomyzone.com 3D anatomy tutorial on the right ventricle using the BioDigital Human (http://www.biodigitalhuman.com). This tutorial covers the internal features of the right ventricle. The following structures are discussed: - atrioventricular orifice - tricuspid valve (anterior, posterior and septal cusps) - chordae tendineae - papillary muscles (anterior, posterior and septal) - trabeculae carneae - septomarginal trabecula - conus arteriosus/infundibulum - pulmonary trunk - pulmonary valve (left, right, anterior cusps) - nodule of cusp - pulmonary sinus - interventricular septum (membranous and muscular parts) Join the Facebook page for updates: http://www.facebook.com/anatomyzone Follow me on twitter: http://www.twitter.com/anatomyzone Subscribe to the channel for mor...
Find more videos at: https://www.kenhub.com Subscribe to our YouTube channel: http://bit.ly/VOEG2I The left ventricle receives blood from the left atrium of the heart via the relaxation of the mitral valve. When it contracts, it pushes the blood volume through the aortic valve and into the aorta. In comparison with the right ventricle, the left is both shorter in length and is transversely circular in a concave manner. It forms the lesser part of the sternocostal surface of the heart anterosuperiorly, the larger part of the diaphragmatic surface inferiorly as well as the apex of the heart. For more Human Anatomy video tutorials, interactive quizzes, articles and an atlas of Human Anatomy, go to https://www.kenhub.com ! Or subscribe to our Youtube channel: http://bit.ly/VOEG2I Like us ...
Find more videos at: https://www.kenhub.com Subscribe to our YouTube channel: http://bit.ly/VOEG2I The right ventricle of the human heart collects deoxygenated blood from the right atrium as the tricuspid valve relaxes and pumps it via rhythmic contractions through the pulmonary valve in its roof and into the pulmonary trunk which passes the blood onto the pulmonary artery and into the lungs. For more Human Anatomy video tutorials, interactive quizzes, articles and an atlas of Human Anatomy, go to https://www.kenhub.com ! Or subscribe to our Youtube channel: http://bit.ly/VOEG2I Like us on facebook: https://www.facebook.com/kenhubcom Follow us on twitter: https://twitter.com/kenHub_com Articles related to this video ============================= Ventricles of the Heart https://www.ken...
http://www.anatomyzone.com 3D anatomy tutorial on the features of the left ventricle using the BioDigital Human (http://www.biodigitalhuman.com). This tutorial covers the following features: - Position of the left ventricle - Atrioventricular orifice - Mitral/bicuspid valve - Chordae tendinaea - Papillary Muscles - Trabeculae carneae - Left ventricular outflow tract/aortic vestibule - Aortic valve - Aortic sinus - Coronary arteries Join the Facebook page for updates: http://www.facebook.com/anatomyzone Follow me on twitter: http://www.twitter.com/anatomyzone Subscribe to the channel for more videos and updates: http://www.youtube.com/subscription_center?add_user=theanatomyzone
http://www.interactive-biology.com - In this video, I go through the process of how blood flows through the heart. It shows blood entering via the vena cave to the Right atrium, then getting pumped into the right ventricle, to the pulmonary vein to the lungs, to the left atria, left ventricle and then via the aorta to the rest of the body. Enjoy! http://www.interactive-biology.com
Blood flows through the atrium, ventricles, and heart valves. Learn the cardiac systemic and pulmonic circulations. Please SUBSCRIBE: More cool stuff coming as we get more HippoHelpers! Cardiac/Respiratory Playlist: http://www.youtube.com/playlist?list=PLIPkjUW-piR0QD_IsxkMTRA0LxdOcwJN6 See our clinical skills playlist at: http://www.youtube.com/playlist?list=PLIPkjUW-piR0-F25ydO8uI8DbHzuJKIcQ And visit http://www.helphipppo.com for more tutorial videos and flashcards.
http://www.cincinnatichildrens.org/health/h/hlhs/ Hypoplastic left heart syndrome (HLHS) is one of the most complex cardiac defects seen in newborns and remains one of the most challenging to manage of all congenital heart defects. As a single ventricle defect, all of the structures on the left side of the heart are severely underdeveloped. The right ventricle must then do "double duty" to support circulation of blood both to the lungs and out to the body. Heart models and animation were developed by the Cincinnati Children's Heart Institute in conjunction with Cincinnati Children's Critical Care Media Lab. http://www.cincinnatichildrens.org/service/h/heart-institute/default/
Single ventricle malformations are a group of congenital heart defects in which one of the heart pumping chambers (ventricles) develops improperly and cannot effectively circulate blood. Babies born with single ventricle malformations have a difficult time getting blood to different areas of the body. Experts from the Cardiac Center at The Children's Hospital of Philadelphia explain the anatomy and physiology of a normal heart vs. a heart with single ventricle. Visit http://heart.chop.edu to learn about the Cardiac Center at CHOP and to read more about single ventricle heart defects.
An ventricular septal defect is a hole between the two ventricles of the heart. Normally this hole is present at birth but closes within a few days of life. Failure of this hole to close is called a ventricular septal defect, and usually is asymptomatic (no obvious symptoms are present). More free lessons at: http://www.khanacademy.org/video?v=lZSi0xifXwc 0:01 What does a ventricular septal defect sound like? 1:13 Left-to-right ventricular shunting 3:09 Locations of ventricular septal defects 4:26 Signs and symptoms 5:25 Treatment Practice questions related to these concepts here: https://www.khanacademy.org/test-prep/NCLEX-RN/rn-cardiovascular-diseases/rn-non-cyanotic-heart-diseases/e/non-cyanotic-heart-diseases-quiz Find more free videos, practice questions, and articles related to he...
Watch the story of Jason and Stosh, both born with a single ventricle heart defect. Learn about the advances in heart care that have made it possible to diagnose heart defects prior to a baby's birth, and to offer treatment and long-term care that give children born with single ventricle heart defects a more optimistic outlook. Visit http://heart.chop.edu/sv to learn more about single ventricle heart defects.