Organ, Definition, Types, & Facts

Organ, in biology, a group of tissues in a living organism that have been adapted to perform a specific function. In higher animals, organs are grouped into organ systems; e.g., the esophagus, stomach, and liver are organs of the digestive system. Learn more about organs in this article.

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Organ, Definition, Types, & Facts

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Levels of Organization and Tissue Types – Medical Terminology: An Interactive Approach

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