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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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- 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.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.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.
- Figure 34.19 Which of the following statements about digestive processes is true? Amylase, maltaseT and lactase in the mouth digest carbohydrates. Trypsin and lipase in the stomach digest protein. Bile emulsifies lipids in the small intestine. No food is absorbed until the small intestine.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?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?
- 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.Figure 34.12 Which of the following statements about the small intestine is false? Absorptive cells that line the small intestine have microvilli, small projections that increase surface area and aid in the absorption of food. The inside of the small intestine has many folds, called villi. Microvilli are lined with blood vessels as well as lymphatic vessels. The inside of the small intestine is called the lumen.1. Explain why protein should be included in the diet? 2. State several reasons why carbohydrates are usually needed in more amounts than fats in the diet.
- B. Animal Nutrition 16. liver a. Acid release 17. Salivary gland b. Storage if undigested food 18. Small intestine c. Bile secretion 19. Large intestine d. Complete digestion 20. Rectum e. Absorption of water 21. Stomach f. Release of feces. 22-23. Why is digestion of fats difficult as compared to that of other nutrients? 24-25. What are villi? Write its function. Match the items in Column I with Column II. COLUMN I Column II1. State several reasons why carbohydrates are usually needed in more amounts than fats in the diet 2. Explain why protein should be included in the diet. 3. What will happen to the human body if we are deficient in particular vitamins and trace elements? Give examples of effects of vitamin and mineral deficiencies. 4. There are 20 amino acids needed to make proteins in the animal body. Why aren't they all considered essential to animal diets? 5. Compare the incomplete and complete digestive systems. 6. What are the functions of accessory organs in a complete digestive system? 7. Explain how digestion is regulated in animals. What are the organ systems involved in regulation of digestion? Explain. 8. What are the health problems associated with nutrition and digestive system? Give atleast 3 examples with explanationPut the following steps of fat digestion and absorption in order: 1. Bile coats fat droplets 3. Chylomicrons are formed 4. Chylomicrons are released into lymphatic system 5. Monoglycerides and fatty acids cross enterocyte cell membranes by diffusion 6. Pancreatic lipase break down fats a 1, 6, 5, 3, 4 b 1, 3, 4, 6, 5 c 6, 5, 1, 3, 4 d 6, 3, 4, 1, 5 e None of the answers are correct