Q. During intake of food, what prevents the entry of food into the glottis (opening of wind pipe)?
A) Glottis itself prevents into the entry of food glottis
B) Food entry is prevented by air present in wind pipe
C) Food entry into glottis is prevented by annular rings of pharynx
D) Food entry is prevented by epiglottis into the glottis
Explanation
The lower part of pharynx leads into the food pipe behind and to voice box infront of it. Opening of pharynx to larynx is called glottis, which has a leaf like cartilaginous flap called epiglottis. During swallowing of food, epiglottis prevents the entry of food into glottis
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.