Which structure of the respiratory system prevents foreign matter from entering the lower respiratory system?
A) Trachea
B) Esophagus
C) Epiglottis
D) Pharynx

Question

Quizplus · Accepted Answer

The epiglottis is a flap of tissue that sits at the base of the tongue and closes over the windpipe (trachea) during swallowing to prevent food, liquid, and foreign matter from entering the airways, thus protecting the lower respiratory system.

Which Structure of the Respiratory System Prevents Foreign Matter from Entering