Chapter 26 Physiology of the Digestive System

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Chapter 26  Physiology of the Digestive System

 

 

Complete chapter Questions And Answers
 

Sample Questions

 

 

TRUE/FALSE

1. The bolus of food is formed during the pharyngeal stage of deglutition.

ANS: F DIF: Memorization REF: Page 880 TOP: Mechanical Digestion

2. Respiration is inhibited for the 1 to 3 seconds required for food to clear the pharynx during each swallowing.

ANS: T DIF: Memorization REF: Page 881 TOP: Mechanical Digestion

3. To propel food from the pharynx into the esophagus, three openings must be blocked.

ANS: T DIF: Memorization REF: Page 880 TOP: Mechanical Digestion

4. Peristalsis is a back-and-forth action that breaks apart chunks of food and mixes in digestive juices.

ANS: F DIF: Memorization REF: Page 882 TOP: Mechanical Digestion

5. The process of emptying the stomach takes about 12 hours after a meal.

ANS: F DIF: Memorization REF: Page 882 TOP: Regulation of Motility

6. After leaving the stomach, chyme normally takes about 5 hours to pass all the way through the small intestine.

ANS: T DIF: Memorization REF: Page 884 TOP: Regulation of Motility

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Test Bank 26-2 7. Enzymes are unique in that they can function optimally within a wide range of pH.

ANS: F DIF: Memorization TOP: Chemical Digestion

8. Enzymes are usually defined as inorganic catalysts. ANS: F DIF: Memorization

TOP: Chemical Digestion
9. Pepsin is inactive in the presence of hydrochloric acid.

ANS: F DIF: Memorization TOP: Chemical Digestion

 

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