Cardio_discussion_#7 - Present your data for vasodilation...

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Present your data for vasodilation following occlusion. Did blood flow increase or decrease into the previously occluded vessel (immediately after removing the cuff)? Why? What is the dive reflex? Present your data for the dive reflex. Draw a reflex arc for this response? What is the mechanism causing this response? Why would humans, who are typically not diving animals, retain this reflex? data observations for vasodilation following occlusion were basedon the the outcomes of reactive hyperemia. After prolonged elevaton of the subject’s left arm, there was a noticible loss of color. It seemed as though all color was drained, and all that was left was a whitish-yellow color, very sick and pale looking. As soon as constriction of the vessels ceased, skin o the left arm was extremely speckeled with red, and within a few seconds the hand, especially the tip of the fingers, were a deep red, almost purple, color. This data seems to agree with the the initial hypothesis that blood flow, immediately after removing the cuff, would greatly increase into the previously occluded vessel. After artery occlusion there was vasodilation that was inversely proportional to the control microvascular diameter of the vessels. The dive reflex:
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This note was uploaded on 05/04/2008 for the course NPB 101L taught by Professor Goldberg during the Winter '08 term at UC Davis.

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Cardio_discussion_#7 - Present your data for vasodilation...

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