When the blood supply to an organ is blocked for a period of time and then re-instated, blood flow is transiently increased above its normal level. This response is referred to as reactive hyperemia and occurs because:

Question

When the blood supply to an organ is blocked for a period of time and then re-instated, blood flow is transiently increased above its normal level. This response is referred to as reactive hyperemia and occurs because:

Accepted Answer

Local chemical factors are released which cause the smooth muscle of the arterioles to relax.

Answer

Local chemical factors are released which cause the smooth muscle of the capillaries to relax.

Answer

There is an increase in activity in the sympathetic nerves which innervate the arterioles.

Answer

The veins leaving the organ dilate, allowing more blood to enter them.

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When the blood supply to an organ is blocked for a period of time and then re-in...

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