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

Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds. Learn more about the heart in this article.

Anatomy of the Heart Quiz, purpose game anatomy

The heart is an organ that is classically described to be the size of a clenched fist. It is located a…

Heart, Anatomy, Parts & Diagram - Lesson

The normal heart

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

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