18
QuizMultiple Choice

The Digestive System — Unit test

Question 18 • Biology - SC3209 IC

The pharynx is the structure in the body that serves as a pathway of both air and food. How does the body make sure that food does not get into the lungs?

Answer
A
The salivary glands secrete enzymes that pull food out of the air pathway.
B
The small intestine pushes the air out of the digestive system.
C
The pancreas breaks down food in the air pathway.
D
The epiglottis closes the air pathway so that food will not enter it.

Explanation

When you swallow, the epiglottis—a flap of tissue above the airway—folds down to cover its opening. This directs food into the esophagus instead of the lungs. The choice stating that the epiglottis closes the air pathway is correct; the salivary glands, small intestine, and pancreas do not perform this function.

AI-written and checked against the verified answer.

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