The upper opening of the windpipe is guarded by a muscular flap called

Diaphragm

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Tongue

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Epiglottis

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Cardiac sphincter

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Solution

The correct option is C
Epiglottis

The upper opening of the windpipe is guarded by a muscular flap called epiglottis. The epiglottis closes the windpipe at the time of swallowing food. Incomplete closure by the epiglottis results in coughing as the food wrongly enters the windpipe.

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The upper opening of the windpipe is guarded by the ...............

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