The left atrium is one of the four chambers in the human heart. It receives oxygenated blood from the pulmonary veins, and pumps it into the left ventricle, via the mitral valve. Atria facilitate circulation primarily by allowing uninterrupted venous flow to the heart, preventing the inertia of interrupted venous flow that would otherwise occur at each ventricular systole.
Read more about Left Atrium: Size, Foramen Ovale, Blood Supply, Animals
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“Somewhere slightly before or after the close of our second decade, we reach a momentous milestone—childhood’s end. We have left a safe place and can’t go home again. We have moved into a world where life isn’t fair, where life is rarely what it should be.”
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