Thesaurus: epithelium

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1. n. The superficial layer of cells lining the alimentary canal and all its appendages, all glands and their ducts, blood vessels and lymphatics, serous cavities, etc. It often includes the epidermis (i. e., keratin-producing epithelial cells), and it is sometimes restricted to the alimentary canal, the glands and their appendages, -- the term endothelium being applied to the lining membrane of the blood vessels, lymphatics, and serous cavities.
2. n. membranous tissue covering internal organs and other internal surfaces of the body
3. The superficial layer of cells lining the alimentary canal and all its appendages, all glands and their ducts, blood vessels and lymphatics, serous cavities, etc. It often includes the epidermis (i. e., keratin-producing epithelial cells), and it is sometimes restricted to the alimentary canal, the glands and their appendages, -- the term endothelium being applied to the lining membrane of the blood vessels, lymphatics, and serous cavities.
4. The superficial layer of cells lining the alimentary canal andall its appendages, all glands and their ducts, blood vessels andlymphatics, serous cavities, etc. It often includes the epidermis (i.e., keratin-producing epithelial cells), and it is sometimesrestricted to the alimentary canal, the glands and their appendages,-- the term endothelium being applied to the lining membrane of theblood vessels, lymphatics, and serous cavities.
5. n:100 n. membranous tissue covering internal organs and other internal surfaces of the body