In a histological cross section through an artery, a vein, and a lymphatic vessel, one can recognize the lymphatic vessel because it
A) has the fewest valves.
B) has the thinnest walls.
C) has the thickest tunica media.
D) always lies closest to the artery, which has the thinnest walls.

Question

Quizplus · Accepted Answer

Lymphatic vessels have thinner walls compared to arteries and veins, which have a thicker tunica media. The presence of valves and proximity to an artery are not reliable distinguishing features for identifying lymphatic vessels.

In a Histological Cross Section Through an Artery, a Vein