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Why Do Regional Exchanges Exist

question 68

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Why do regional exchanges exist?


Definitions:

Pepsinogen

The inactive precursor of pepsin, an enzyme that breaks down proteins in the stomach.

Ileocecal Valve

A valve located between the ileum (last portion of the small intestine) and the cecum (first part of the large intestine) that controls the flow of digested food.

Pyloric Sphincter

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

Anal Sphincter

A circular muscle that surrounds the anus, controlling the passage of feces out of the body through the anal opening.

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