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 In alveoli, the diffusion membrane is made up of

 

Option: 1

Thin squamous epithelium of alveoli

 


Option: 2

Endothelium of alveolar capillaries

 


Option: 3

Basement substance 

 


Option: 4

All of the above 

 


Answers (1)

best_answer

The diffusion membrane is made up of three major layers:

  • Thin squamous epithelium of alveoli
  • Endothelium of alveolar capillaries
  • Basement substance (composed of a thin basement membrane supporting the squamous epithelium and the basement membrane surrounding the single layer endothelial cells of capillaries) in between them
  • Hence the correct option is 4.

Posted by

chirag

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