Heart Anatomy The Texas Heart Institute

Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of your breastbone. A double-layered membrane called the pericardium surrounds your heart like a sac. The heart weighs between 7 and 15 ounces (200 to 425 grams) and is a little larger than the size of your fist.

Heart, Structure, Function, Diagram, Anatomy, & Facts

The Heart Institute of East Texas - The human heart has four valves. These tissue-paper thin membranes attached to the heart wall constantly open and close to regulate blood flow (causing the

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