Arterioles Spend Most of Their Time

Question

Arterioles spend most of their time
A) contracting and relaxing.
B) filtering water and solute at one end and reabsorbing water and waste at the other end.
C) absorbing lymph from the interstitium.
D) filtering clots out of the blood entering the capillaries.

Accepted Answer

Arterioles are responsible for regulating blood flow and blood pressure. They do this by contracting and relaxing, which changes the size of their lumen and controls the amount of blood that flows through them.