Choose the CORRECT statement concerning blood vessels.
A. Venules control blood flow through capillaries
B.Arterioles drain blood from capillaries.
C.Veins have thinner walls, but more valves than arteries.
D.Nutrient exchange may occur along arterial vessels.
E. All of the choices are correct
2 answers
I think B.
Since arteries are closer to the heart, their walls are thicker to stand against the pressure of the heart pumping. Veins have more valves to keep the blood from backing up.