why do the walls of trachea not collapse when there is less air in it
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Answer:
The trachea is covered by incomplete C- shaped cartilaginous rings . The trachea is composed of about 20 rings of tough cartilage. The back part of each ring is made of muscle and connective tissue. This ring prevents trachea from collapsing when there is less air in it.
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Answer:
In trachea , there are C shaped rings of cartilage which helps to hold them even when the air is less in it . Hence they do not collapse.
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