Heart | Structure, Function, Diagram, Anatomy, & Facts
https://www.britannica.com/science/heart
WEBApr 13, 2024 · The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and another layer, the endocardium, lines the inside. The heart cavity is divided down the middle into a right and a left heart, which in turn are subdivided into two chambers.
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