Left Auricle

The heart's left auricle shouldn't be confused with the left atrium, although the terms have been used interchangeably in the past. The left auricle, also known as the left atrial appendage (LAA), is actually a small, muscular pouch at the upper corner of the left atrium. It collects oxygenated blood as it leaves the lungs and moves the blood into the left ventricle.

 

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