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epithelia

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epithelia


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  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. 




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