If cardiovascular reflexes do not quickly initiate vascular smooth muscle contractions in the veins when rapidly rising from a supine position, ___________ is reduced and leads to a drop in _________. a. heart rate; cardiac output b. venous return; mean arterial pressure c. venous return; heart rate d. mean arterial pressure; heart rate Select all that apply
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When rapidly rising from a supine position, blood pools in the lower extremities due to gravity. Show more…
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