What physiological change occurs in the skin of control subjects during ha exercise?

Small blood vessels called arterioles carry blood from your artery, which is where it originates, away from your heart, to your tissues and organs.
Small arteries called arterioles connect to capillaries, which are even smaller.
Your capillaries function as an exchange station where oxygen, nutrients, and waste from your tissues are traded back and forth due to their extremely thin walls.

These connections are made by your capillaries and your venules, which are the tiniest veins in your body and carry blood back to your heart.

The following processes cool the body (i.e., lower body temperature) when body temperature is elevated (as would happen during HA exercise): Vasodilation (widening) of skin arterioles enhances heat loss through the skin by increasing blood flow to skin capillaries. When the smooth muscle surrounding the blood vessels relaxes, vasodilation occurs.

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