Question

check for understanding 2 of 4
answer the question correctly to continue reading
what is the primary function of arterioles?
a they carry oxygenated blood from the left ventricle to the body tissues.
b they attach the vessel to the surrounding tissue.
c they transport blood from the right ventricle to the lungs.
d they play a key part in regulating blood flow into the tissue capillaries.

Explanation:

Arterioles are small - diameter blood vessels. They have smooth muscle in their walls which can constrict or dilate. This ability allows them to control the amount of blood flowing into the tissue capillaries, regulating blood flow and blood pressure in the body. Option A describes the function of arteries, option B is not a function of arterioles, and option C describes the function of the pulmonary artery.

Answer:

D. They play a key part in regulating blood flow into the tissue capillaries.