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Exam 23: The Digestive System

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Question 51

True/False

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Most gastric ulcers are due to excessive production of hydrochloric acid.

A) True
B) False

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Question 52

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From the esophagus to the anal canal,the walls of every organ of the alimentary canal are made up of the same four basic layers.Arrange them in order from the lumen.

A) serosa, mucosa, submucosa, and muscularis externa
B) mucosa, submucosa, muscularis externa, and serosa
C) submucosa, serosa, muscularis externa, and mucosa
D) muscularis externa, serosa, mucosa, and submucosa

E) B) and C)
F) C) and D)

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Question 53

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Your friend suffers from heartburn and was told that he should "stop drinking caffeinated coffee because it is acidic." Explain to your friend why this is good advice but explain the mistaken facts to him.

Short-chain triglycerides found in foods such as butterfat molecules in milk are split by a specific enzyme in preparation for absorption.Which of the following enzymes is responsible?

The ________ ligament anchors a tooth in the alveolus of the jaw.

Figure 23.3 Using Figure 23.3, match the following: -Increases surface area for absorption via villi and microvilli.

What is heartburn and what causes it?

When we ingest large molecules such as lipids,carbohydrates,and proteins,they must undergo catabolic reactions whereby enzymes split these molecules.This series of reactions is called ________.

The circular folds of the small intestine enhance absorption by causing the chyme to spiral,rather than to move in a straight line,as it passes through the small intestine.

The part of the peritoneum that covers the external surfaces of most digestive organs is the ________ peritoneum.

Figure 23.1 Using Figure 23.1, match the following: -Duodenal glands found here.

Figure 23.3 Using Figure 23.3, match the following: -Bacteria process undigested chyme from the small intestine.

The principal enzyme for breaking down carbohydrates is ________.

Select the correct statement about electrolyte absorption.

Cells of the stomach that secrete HCl are ________ cells.

Match the following: -Process by which simpler chemical units pass through the lumen of the gastrointestinal tract into the blood or lymph.

Figure 23.1 Using Figure 23.1, match the following: -Continuation of the mesentery.

Match the following: -Chemical or mechanical process of breaking down foodstuffs into simpler units.

How is salivation regulated?

Match the following: -Increases output of enzymatic-rich pancreatic juice.