Which of the Following Is Not Considered to Be a Primary

question 63

Multiple Choice

Which of the following is not considered to be a primary organ in the human digestive system?

• A)Esophagus
• B)Mouth
• C)Liver
• D)Stomach
• E)Small intestine

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Definitions:

Pyloric Sphincter

A muscular valve regulating the flow of partially digested food from the stomach to the small intestine.

Ileocecal Sphincter

A valve situated at the junction of the ileum (last part of the small intestine) and the cecum (first part of the large intestine) that controls the flow of digested material.

Lower Esophageal Sphincter

A muscular ring that controls the flow between the esophagus and stomach, preventing reflux.

Anal Sphincter

A muscle that surrounds the anus and controls the release of feces from the digestive tract.