Give reason why walls of trachea do not collapse when there is less air in it
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Because it is surrounded by c shaped cartilage structure which prevents blocking
Ankitpoonia:
Because it surrounded by "C" shape cartilage ring which is complete in vental side but incomplete in dorsal side
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Trachea is supported by c-shaped rings of cartilage which hold them in place when there is less air inside it. So, the walls of trachea do not collapse even when there is a little air.
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