function of arterioles
An arteriole is one of several types of blood vessels that transport blood around the body. Other blood vessels include arteries, veins, venules and capillaries. The. of an arteriole is: Arterioles are tiny branches of arteries that lead to capillaries. Arterioles are under the control of the sympathetic nervous system, and constrict and dialate to. . The. of arterioles include: 1  Transport blood from arteries to capillaries. 2  Arterioles are the main regulators of blood flow and pressure.