heart rate: Quick Facts

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Facts

Also Known As	heart beat • pulse rate

Photos and Videos

Blue electrocardiogram line with repeating peaks and valleys appears on a dark grid background, illustrating a heartbeat pattern.

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Topics

apex beat sinus rhythm neurogenic contraction myogenic contraction systole Bainbridge reflex diastole cardiac catheterization electrocardiography heart sound cardiac output cardiac muscle How many hearts does an octopus have?

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Key People

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Wilhelm His

Swiss cardiologist

Male muscle, man flexing arm, bicep curl.

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