Medical Dictionary

epithelium

noun ep·i·the·li·um \ˌep-ə-ˈthē-lē-əm\
plural ep·i·the·lia \-lē-ə\

Medical Definition of EPITHELIUM

:  a membranous cellular tissue that covers a free surface or lines a tube or cavity of an animal body and serves especially to enclose and protect the other parts of the body, to produce secretions and excretions, and to function in assimilation

Illustration of EPITHELIUM

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