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Exam 23: The Digestive System

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Question 31

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Figure 23.1Using Figure 23.1, match the following: -Smooth muscle layer.

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Question 32

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Figure 23.3Using Figure 23.3, match the following: -Only digestive structure with three muscle layers.

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Question 33

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Fats significantly delay the emptying of the stomach.

A 45- year- old patient was admitted to the hospital with a diagnosis of cirrhosis of the liver. He is thin and malnourished. His abdomen is very large due to an accumulation of fluid in the abdominal cavity. His lower extremities are very swollen. Explain why these changes have occurred.

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.

Figure 23.2Using Figure 23.2, match the following: -Absorptive cells that line the intestinal tract.

The function of goblet cells is to _ .

The pancreas has both an endocrine and an exocrine function.

You have just eaten a meal high in complex carbohydrates. Which of the following enzymes will help to digest the meal?

The function of the hepatic portal circulation is to .

Figure 23.3Using Figure 23.3, match the following: -Produces a mucoid barrier to prevent self- digestion.

The contains lobules with sinusoids (lined with macrophages) that lead to a central venous structure.

Figure 23.3Using Figure 23.3, match the following: -Receives blood via the hepatic portal system.

How are most nutrients absorbed through the mucosa of the intestinal villa?

Figure 23.3Using Figure 23.3, match the following: -Why is it necessary for the stomach contents to be so acidic? How does the stomach protect itself from digestion?

A patient has esophageal cancer and must have a feeding tube inserted. The nurse tells the patient that the tube will be inserted surgically into the duodenum. The patient's wife asks why the tube will not be inserted into the stomach. What should the nurse say?

Another word for vomiting is .

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?

Nervous control of gastric secretion is provided by .

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