Question

the front opening of pie guarded by a muscular flap is called ____​

Answer 1

Answer:

cinidaria

Explanation:

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Answer 2

Answer:

The oral cavity leads into a short pharynx, which serves as a common passage for food and air. The oesophagus and the trachea (wind pipe) open into the pharynx. A cartilaginous flap, called as epiglottis, prevents the entry of food into the glottis opening of the wind pipe during swallowing