cardiac muscle: Quick Facts

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Last updated

Oct. 26, 2026

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Facts

Also Known As	myocardium • heart muscle

Photos

Illustration of a human heart cross-section showing four chambers-left and right atria and ventricles-with labeled major blood vessels. An inset highlights cardiac muscle tissue, showing myocytes and intercalated disks.

Illustration of a human heart with a magnified callout showing the elongated, striated structure of cardiac muscle cells.

graph depicting the five phases of the action potential of the heart muscle

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Topics

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