What is an auricle?

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Multiple Choice

What is an auricle?

An auricle is an atrial appendage—an ear-shaped, expandable pouch that extends from each atrium. These little sacs increase the atrial volume, acting as reservoirs to help accommodate incoming blood before it moves into the ventricles. They are a feature of the atria, not a separate chamber, not a muscular ridge within a ventricle, and not a valve between chambers.

An auricle is an atrial appendage—an ear-shaped, expandable pouch that extends from each atrium. These little sacs increase the atrial volume, acting as reservoirs to help accommodate incoming blood before it moves into the ventricles. They are a feature of the atria, not a separate chamber, not a muscular ridge within a ventricle, and not a valve between chambers.

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