A red blood cell is in an artery in the right leg. How many capillary beds will it pass through before it returns to the left atrium of the heart?
A) none
B) one
C) two
D) three

Question

Quizplus · Accepted Answer

A red blood cell will pass through two capillary beds in the right leg, one in the lungs (where it becomes oxygenated) and one in the left leg before returning to the left atrium of the heart. Therefore, the correct choice is C (two).

A Red Blood Cell Is in an Artery in the Right