Are Atrium and Auricle the Same Thing?

In humans the atria are the two upper chambers of the heart. Each is roughly cube-shaped except for an ear-shaped projection called an auricle. (The term auricle has also been applied, incorrectly, to the entire atrium.)

Is atrium and auricle the same?

Atrium is a chamber that supplies blood to the ventricles. ... Auricle is an outer appendage of the atrium. It increases the capacity of the atrium. The main difference between atrium and auricle is their structure and function.

What are the Auricles of the heart?

Each half of the heart is divided into an upper chamber and a lower chamber; the upper chambers are called auricles and the lower chambers are called ventricles. ... Auricles have thin walls and act as receiving rooms for the blood while the ventricles below act as pumps, moving the blood away from the heart.