The bulges that give lymph vessels a string-of-beads appearance are really
A) weakenings in the wall of the vessels.
B) temporary constrictions caused by bulging skeletal muscles that squeeze the lymph vessel.
C) lymph nodes.
D) pockets for valves.

Question

Quizplus · Accepted Answer

The bulges in lymph vessels are pockets for valves, which help prevent backflow and ensure the unidirectional flow of lymph through the vessels.

The Bulges That Give Lymph Vessels a String-Of-Beads Appearance Are