(A) During the process of swallowing (deglutition),a cartilaginous flap called the $epiglottis$ prevents the entry of food into the $glottis$ (the ope

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The epiglottis covers the glottis

(A) During the process of swallowing (deglutition),a cartilaginous flap called the $epiglottis$ prevents the entry of food into the $glottis$ (the opening of the windpipe or trachea).When food is swallowed,the larynx moves upward,causing the $epiglottis$ to fold down and cover the $glottis$ like a lid.This mechanism ensures that the food bolus is directed into the esophagus instead of the respiratory tract.

Class 11 Biology Breathing and Exchange of Gases Human Respiratory System

Medium

Food does not normally enter the trachea because during swallowing of food

A
The epiglottis covers the glottis
B
The nodule called cartilage of Santorini plugs the larynx
C
The cartilage called arytenoids lie between the larynx and the glottis
D
The circular muscles at the front end of the trachea contract and close its opening