left atrium (anatomy)

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The left atrium of the heart connects the pulmonary veins with the right ventricle. It is smaller than and posterior to the right atrium, but its walls are thicker. It is roughly quadrangular in shape and forms the majority of the posterior surface of the heart.

In the submenu, the left atrium is considered in terms of its external and internal surfaces.

Last reviewed 01/2018

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