Food enters the stomach via which orifice or 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 orifice) 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 gastric sphincter controls the release of food from the stomach to the small intestine and is also known as the pyloric sphincter. The fundal sphincter is not a structure in the GI system.

Food Enters the Stomach Via Which Orifice or Sphincter