In a cross section through an artery and vein running parallel in your leg,which would be the artery?
A)The vessel with the largest interior diameter.
B)The vessel with more muscle tissue in the wall.
C)The vessel lined with endothelium.
D)The vessel with valves to prevent backflow.
E)All of the above answers apply.

Question

Quizplus · Accepted Answer

Arteries have thicker walls with more muscle tissue to withstand the high pressure of blood flow. Veins have thinner walls and contain valves to prevent backflow. The size of the interior diameter or the presence of endothelial lining can be variable in both arteries and veins and are not reliable indicators of which vessel is an artery.

In a Cross Section Through an Artery and Vein Running