Question

During intake of food, what prevents the entry of food into the glottis?

• A. Food entry prevented by air present in wind-pipe
• B. Glottis narrows its opening and prevents passage of food through it
• C. Food entry is prevented by epiglottis into glottis
• D. Food entry into glottis is prevented by annular rings of pharynx

Answer 1

The correct option is A Food entry prevented by air present in wind-pipe

C. Food entry is prevented by epiglottis into glottis

Reason: There is a structure called epiglottis is present at the junction of windpipe and foodpipe. It moves back and forth to prevent the passage of food and liquids into the lungs. The usual upright position of the epiglottis allows air to flow into the lungs and the larynx. When a person swallow something, the epiglottis flattens backward to cover the entrance to the larynx and prevent food from entering the lungs and windpipe. The epiglottis returns to its usual position after swallowing. So the correct option is C.