Describe the movement of blood through the circulatory system.

Question

anonymous · Answer

en.wikipedia.org/wiki/Circulatory_system

sreekar369 · Answer

-deoxygenated blood returning to the heart from the body enters the right atrium (auricle) of the heart through 2 large veins. The Posterior (inferior) vena cava (brings blood back from the body) and the Anterior (superior) vena cava (brings blood back from the head). 
-this blood first travels to the right ventricle through an atrioventricular valve (A-V valve) and is then sent to the lungs to be reoxygenated. It first travels through a semilunar valve which separates the right ventricle and the pulmonary artery. The circulation of blood between the lungs and heart is called the pulmonary circuit. 
-oxygenated blood returning from the lungs enters the left atrium of the heart through the pulmonary vein, travels through another A-V valve into the left ventricle and leaves the heart to enter the body through another semilunar valve which separates the left ventricle and the aorta. The Chordae Tendinae prevent the valves from inverting (turning inside out) when they shut. The blood will now circulate through the body and back into the heart again through the vena cavas. This circulation of blood through the body to meet the needs of the tissues is called the systemic circuit.

anonymous · Answer

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