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biology

The epithelium of the alveoli of lung is____________

A

Stratified epithelium

B

Columnar epithelium

C

Squamous epithelium

D

Cuboidal epithelium

Answer

  • Simple squamous epithelium lines the air sacs, or alveoli, of the lungs. The alveoli are sites where the air is exchanged in the lungs. 
  • Simple squamous epithelial cells in the alveoli allow oxygen from the air to enter the blood in the capillaries of the lung. 
  • Carbon dioxide, a waste product, passes across the epithelium of the alveoli to be removed from the body. Striated, columnar and cuboidal epithelium is absent in the lines of alveoli. 
Therefore, the correct answer is option C.

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