Even when there is no air in it, human trachea does not collapse due to presence of

Bony rings

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High pressure

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Low pressure

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Cartilaginous rings

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Solution

The correct option is D Cartilaginous rings
The wall of trachea is strengthened by C- shaped rings of cartilage which prevent it from collapsing. Thus, Option D is correct.

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The air passage in the respiratory system of humans does not collapse due to presence of:

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