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Answered by bhandarianita661
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C- Trachea is made up of cartilaginous ring

Answered by shubhampatyad
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Answer:

Trachea is made up of cartilaginous ring ...

Explanation:

In trachea ,there are C shaped rings of cartilage which helps to hold them when the air passes through it and even they help to hold them when the air is less in it that's why they don't collapse.

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