The pyloric sphincter regulates flow of food into the
1. small intestine.
2. stomach.
3. esophagus.
4. rectum.
Correct Answer: 1
Rationale 1: The pyloric sphincter regulates food out of the stomach into the small intestine.
Rationale 2: The pyloric sphincter moves food out of the stomach.
Rationale 3: The cardiac sphincter keeps food from moving back into the esophagus.
Rationale 4: The pyloric sphincter regulates food out of the stomach, not the rectum.
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