Which of the Following Statements is True About an Auricle

Question

Which of the following statements is true about an auricle?
A) It is also called a coronary sinus.
B) It is the superior portion of the apex of the heart.
C) It is an expandable atrial appendage.
D) It is the medial cavity of the thorax.
E) It is the base of the diaphragm.

Accepted Answer

The auricle is an expandable extension of the atrium, which is one of the upper chambers of the heart. It increases the atrial volume and is not to be confused with the coronary sinus, the apex of the heart, the thoracic cavity, or the base of the diaphragm.