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Medical Definition of Muscle epithelium
1. Spindle-shaped, contractile, smooth muscle-like cells of epithelial origin that are arranged longitudinally or obliquely around sweat glands and the secretory alveoli of the mammary gland; stellate myoepithelial cells occur around lacrimal and some salivary gland secretory units. Synonym: muscle epithelium. Origin: myo-+ epithelium (05 Mar 2000)