Why do the walls of the trachea not collapse when there is less air in it?
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Tracheal walls do not collapse when there is less air in it because it is supported by rings of cartilage.
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Explanation:
The trachea is covered by incomplete C- shaped cartilaginous rings .
The trachea is composed of about 20 rings of tough cartilage.
This ring prevents trachea from collapsing when there is less air in it.
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