Answered: Why doesn’t gastric juice destroy the…

Science

Biology

Why doesn’t gastric juice destroy the stomach cells that make it?

Body Structures & Functions

12th Edition

ISBN:9781285695495

Author:Scott

Publisher:Scott

Chapter18: Digestive System

Section: Chapter Questions

Problem 8RQ

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Question

1. Why doesn’t gastric juice destroy the stomach cells that make it?

2. Explain why protein should be included in the diet?

3. State several reasons why carbohydrates are usually needed in more amounts than fats in the diet.

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Bile has a role in _________ digestion and absorption. a. carbohydrate c. protein b. fat d. amino acid
The digestive juices from the liver are delivered to the. stomach liver duodenum colon
The role of the liver in digestion is to: a. synthesize aminopeptidase and dipeptidase to digestpolypeptides. b. synthesize lipase to form free fatty acids. c. secrete trypsin to break the bonds in polypeptides. d. secrete bicarbonate ions and bile salts to help emulsify fats. e. store bile between meals.
Figure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a mixture of food and digestive juices that is produced in the stomach. b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.
By clicking on this link (http://openstaxcollege.org/l/fooddigestion) , you can watch a short video of what happens to the food you eat as it passes from your mouth to your intestine. Along the way, note how the food changes consistency and form. How does this change in consistency facilitate your gaining nutrients from food?
Figure 34.11 Which of the following statements about the digestive system is false? Chyme is a mixture of food and digestive juices that is produced in the stomach. Food enters the large intestine before the small intestine. In the small intestine, chyme mixes with bile, which emulsifies fats. The stomach is separated from the small intestine by the pylloric sphincter.
The order of successive steps in digestion is: a. absorption follows enzymatic hydrolysis. b. secretion of enzymes follows absorption of digestive material. c. mechanical processing follows enzyme secretion. d. mechanical processing follows enzymatic hydrolysis. e. enzymatic hydrolysis precedes secretion of digestive aids.
By watching this animation (http://openstaxcollege.org/l/foodgroups) , you will see that for the various food groups—proteins, fats, and carbohydrates—digestion begins in different parts of the digestion system, though all end in the same place. Of the three major food classes (carbohydrates, fats, and proteins), which is digested in the mouth, the stomach, and the small intestine?