Question Detail

ZOO 101 Digestion and Absorption of Food Objective Question

Question

What is the function of the lower esophageal sphincter (LES)?
Options
A To mix food with gastric juices.
B To absorb water from chyme.
C To control passage of food into the stomach and prevent acid reflux.
Correct Answer
D To secrete hydrochloric acid.
Correct Answer

Option C is the correct answer.

Detailed Explanation

The lower esophageal sphincter controls the passage of food into the stomach and prevents acid from flowing back into the esophagus.

Hint

Its malfunction can cause heartburn.

Question Info