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Never understood how do hearts works... Now I do 14 comments
guest
· 10 years ago
The large vessels on the figure are the Aorta (connected the the Left Ventricle) is the largest artery in your body (about the thickness of a garden hose) and the Vena Cava, the largest vein in the body.
Never understood how do hearts works... Now I do 14 comments
guest
· 10 years ago
As a medical student studying the heart right now, I can indeed confirm that this is an accurate portrayal of cardiac physiology. 4 chambers: Right Atrium, Right Ventricle, Left Atrium, Left Ventricle. The R side of the heart pumps de-oxygenated blood through the pulmonary circuit (lungs and pulmonary artery/vein), returning to the left atrium. Blood moves from the L atrium to the L ventricle. Left ventricle then pumps the oxygenated blood throughout your arteries. Oxygen in the blood gets used by your various muscles/organs and is collected in veins, eventually returning to the Right side of the heart (atrium). All of this is mediated by an intrinsic pace maker (the SA Node) conducting the electrical signal- yellow on this figure- throughout the heart. The electrical signal leads to depolarization of the cell and contraction of the muscle. Maybe you just learned something.
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