资料来源 : pyDict

上皮,上皮细胞

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Epithelium \Ep`i*the"li*um\, n.; pl. E. {Epitheliums}, L.
   {Epithelia}. [NL., fr. Gr. 'epi` upon + ? nipple.] (Anat.)
   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.

资料来源 : WordNet®

epithelium
     n : membranous tissue covering internal organs and other
         internal surfaces of the body [syn: {epithelial tissue}]
     [also: {epithelia} (pl)]