Which vessels are structurally suited for the central purpose of allowing substances to pass in and out of them through their entire lengths?

Question

Quizplus · Accepted Answer

Capillaries are the only vessels that are structurally suited for the central purpose of allowing substances to pass in and out of them through their entire lengths. Both arteries and veins have thicker walls and are designed to maintain pressure and transport blood, while arterioles are smaller branches of arteries that help to control blood flow to specific areas. Semilunar valves are structures within the heart that regulate blood flow between the ventricles and large arteries.

Which Vessels Are Structurally Suited for the Central Purpose of Allowing