BPK 143 Lecture Notes - Lecture 5: Superior Vena Cava, Pulmonary Valve, Mitral Valve
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19 Jan 2017
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Pulmonary circulation: is where deoxygenated blood is pumped from the heart to the lungs and oxygenated blood is returned back to the heart. Systemic circulation: is where oxygenated blood is pumped from the heart around the rest of the body and deoxygenated blood is returned back to the heart. Blood from the head and upper extremities, and from the trunk and lower extremities, returns to the heart via the superior vena cava and inferior vena cava, respectively. It flo(cid:449)s through the right atriu(cid:373) The tri(cid:272)uspid (cid:448)al(cid:448)e the right (cid:448)e(cid:374)tri(cid:272)le the pul(cid:373)o(cid:374)ar(cid:455) (cid:448)al(cid:448)e a(cid:374)d the pul(cid:373)o(cid:374)ar(cid:455) arteries to the lungs. In the lungs, the blood gives up excess carbon-dioxide (co2) and replenishes oxygen (o2). It the(cid:374) flo(cid:449)s through the pul(cid:373)o(cid:374)ar(cid:455) (cid:448)ei(cid:374)s the left atriu(cid:373) the (cid:271)i(cid:272)uspid (cid:448)al(cid:448)e the left (cid:448)e(cid:374)tri(cid:272)le. The aorti(cid:272) (cid:448)al(cid:448)e a(cid:374)d i(cid:374)to the aorta. From there, blood goes into systemic circulation, where it delivers oxygen (o2) to the tissues and removes carbon dioxide (co2) from the tissues.
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