Give reason :The vestibule of nasal chamber has fine hair.

1.	Give reason :The vestibule of nasal chamber has fine hair.
Answer» 1. The oesophagus and trachea lie side by side. 2. There is possibility that food particles may enter respiratory passage at the time of gulping. 3. However, the epiglottis prevents the entry of food into the respiratory passage by closing it temporarily. 4. Thus, for preventing the entry of food particles into respiratory passage, the glottis is guarded by a flap called epiglottis.

Answer»

1. The oesophagus and trachea lie side by side.

2. There is possibility that food particles may enter respiratory passage at the time of gulping.

3. However, the epiglottis prevents the entry of food into the respiratory passage by closing it temporarily.

4. Thus, for preventing the entry of food particles into respiratory passage, the glottis is guarded by a flap called epiglottis.

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