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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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o371359 o371359
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11 years ago
What happens at the cardiac level to compensate for hypotension? What happens to the normal blood flow to the structures you described earlier during periods of hypotension? If you have sufficient circulating volume but a decreased number of red blood cells, can peripheral perfusion requirements be met?
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#1
11 years ago
Heart rate increases and peripheral blood vessels constrict to shunt blood to the central organs (brain etc). For your 3rd question, I think you'd still be relatively anemic but just enough to prevent cellular damage from hypoxia. Your bone marrow would be working more to make more RBCs.
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#2
11 years ago
Cheeze is correct.

Addition:
Body tries to conserve blood circulation to the vita organs, brain, heart, kidney.

Sympathetic system will increase the heart-beat. redistribute the blood (taking away from muscle & skin).
In brain, the arteries will constrict to increase effective filling pressure & thus maintaining effective perfusion pressure. But this will work till certain level, below that it will stop working.
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