Question

Which part of the digestive system prevents backflow of stomach contents into the esophagus?

a.

Mouth

b.

Pharynx

c.

Esophagus

d.

Lower esophageal sphincter

Posted under IC22 Life Insurance Underwriting

Answer: (d).Lower esophageal sphincter Explanation:The lower esophageal sphincter is a ring-like muscle located between the esophagus and the stomach. It prevents backflow of gastric (stomach) contents into the esophagus.

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Q. Which part of the digestive system prevents backflow of stomach contents into the esophagus?
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