Q.
Which of these epithelia is chiefly involved in function like diffusion and thereby is found in the wall of blood vessel and air sacs of the lungs?
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Structural Organisation in Animals
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Solution:
Squamous epithelium is made of a single thin layer of flattened cells whose edges fit closely together like the tiles of a floor involved in function like forming a diffusion boundary in the walls of blood vessels and air sacs of lungs.