What is the function of the auricles?
A)They are the upper chambers of the heart.
B)They supply oxygen-rich blood to the walls of the heart.
C)They are the lower chambers of the heart, which pump blood to the systemic and pulmonary circuits.
D)They form the serous membrane around the heart.
E)They allow the atria to expand while they are filling with blood.

Question

Quizplus · Accepted Answer

The auricles are structures that are located at the top of the atria in the heart. One of their primary functions is to allow the atria to expand while they are filling with blood, which can increase the amount of blood that they are able to hold. Therefore, the best choice is E: "They allow the atria to expand while they are filling with blood."

What Is the Function of the Auricles