Why does the air passage not collapes when there is no air in it ?
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the air passage does not collapse when their is no air inside it bcz cartilaginous rings are present in it which prevent it being collapsed
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Answer:
hi
Explanation:
The trachea is supported by c-shaped rings of cartilage which hold them in place when there is less air inside it. Due to this, the walls of trachea do not collapse even when there is a little air
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