Question

the actions upon a blood vessels which alters its diameter are called as

Answer 1

The actions upon a blood vessels which alters its diameter are called as Vasomotor 

Answer 2

Answer:

The autonomic nervous system.

Explanation:

Arterioles provide blood to the organs and are chiefly composed of smooth muscle. The autonomic nervous system influences the diameter and shape of arterioles. They respond to the tissue's need for more nutrients/oxygen.

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