Food enters the stomach via which sphincter?
A) Cardiac
B) Upper esophageal
C) Gastric
D) Fundal

Question

Quizplus · Accepted Answer

Each end of the esophagus is opened and closed by a sphincter.The upper esophageal sphincter (cricopharyngeal muscle)prevents entry of air into the esophagus during respiration.The lower esophageal sphincter (cardiac sphincter)prevents regurgitation from the stomach.The lower esophageal sphincter is located near the esophageal hiatus-the opening in the diaphragm where the esophagus ends at the stomach.The cardiac sphincter is the only option that fulfills the function described in the question.

Food Enters the Stomach Via Which Sphincter