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Exam 14: The Digestive System

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Question 151

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Pepsin formation in the stomach is autocatalytic.

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Question 152

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Where is digestion completed?

A) stomach
B) small intestine lumen
C) on the brush borders of the small intestine epithelial cells
D) Colon

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Question 153

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The pancreas secretes enzymes involved in the digestion of all three categories of foodstuff.

Match the digestive enzyme with the correct characteristic by using the answer code: -similar to digestive enzyme found in saliva

What is the major chemical digestive activity occurring in the stomach?

What occurs during the cephalic phase of gastric digestion?

Which tissue layer provides for primary digestive motility?

What is a precursor to an enzyme that functions in the stomach?

Of the fluid entering the small intestine,what percentage is reabsorbed?

A(n)____________________ is an aggregation of bile salts and lecithin.

Indicate the causes and effects of constipation and diarrhea.

Absorption of which of the following is linked to active sodium absorption at the basolateral border of the epithelial cell?

The pharyngoesophageal sphincter is normally closed to prevent esophageal secretions from entering the pharynx during breathing.

The myenteric plexus is a nerve network located in the submucosa.

Deglutition refers to the process of chewing.

What is NOT a component of pancreatic juice?

The extent of absorption of the electrolytes ____________________ and ____________________ is regulated depending on the body's needs.

Gastric secretion occurs only when food is present in the stomach.

The stomach mucosa is thrown into folds known as villi.

____________________ cells are the resident macrophages of the liver.