Question 1

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.

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Question 2

Which of these is not part of the splanchnic circulation?

Accepted Answer

The inferior vena cava is not part of the splanchnic circulation. The splanchnic circulation includes the hepatic portal vein, the superior mesenteric artery, the celiac artery, and their associated branches. The inferior vena cava returns blood from the lower body and is not considered part of the splanchnic circulation.

Question 3

What are chylomicrons?

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Question 4

The protective outermost layer of the esophagus is the ________.

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Question 5

The chief bile pigment is ________.

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Question 6

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

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Question 7

Which of these is not a component of saliva?

Accepted Answer

Cyanide derivative is not a component of saliva. Saliva contains lysozyme, defensins, and metabolic waste products.

Question 8

Cells are found in the sinusoids of the liver that remove debris from the blood as it flows past are called ________ macrophages.

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Question 9

Cells of the stomach that secrete HCl are ________ cells.

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Question 10

The longest portion of the small intestine is the ________.

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Question 11

Why is it necessary for the stomach contents to be so acidic? How does the stomach protect itself from digestion?

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Question 12

The principal enzyme for breaking down carbohydrates is ________.

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Question 13

Compare and contrast the structure and function of a premolar and a molar.

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Question 14

Assume you have been chewing a piece of bread for 5 or 6 minutes.How would you expect its molecular chemistry to change during this time? Why?

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Question 15

Name two regions of the digestive tract where mechanical food breakdown processes are very important.Name two organs that are primarily food conduits.Name the organ where protein digestion is begun.Name the organ where fat digestion begins.

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Question 16

Define constipation and diarrhea.Note possible causes of each.

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Question 17

The ________ phase of gastric secretions occurs when food enters the stomach.

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Question 18

What is heartburn and what causes it?

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Question 19

Identify three ways the small intestine is modified to increase the surface area for digestion and absorption.

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Question 20

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

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Quiz 23: The Digestive System