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ANATOMY & PHYSIOLOGY 2 EXAM 3 DIGESTION/NUTRITION Spring 2012 True/False 1. Peristalsis is defined as a mixing movement, which results in food in small segments of the alimentary canal being mixed with digestive enzymes. 2. Receptive relaxation is related to peristalsis in that when peristalsis occurs the muscular wall just ahead of the contracted ring relaxes. 3. The esophagus provides a passageway for substances from the larynx to the bronchi. 4. The stomach is c-shaped and extends from the duodenum to the spleen. 5. Bile is composed of HCl, pepsin, mucus, and intrinsic factor. 6. Cholecystokinin, a hormone released from intestinal mucosa by the presence of fats, stimulates the…show more content…
29. Amount of potential energy contained in food. True/False 30. The liver functions in fat metabolism to control the amount of glucose, amino acids, and iron that is released into the blood. 31. Cholesterol functions in the body as an energy source, and furnishes molecular components for the synthesis of various sex hormones. 32. Complete proteins can maintain body tissues whereas incomplete proteins cannot support tissue maintenance. 33. Essential amino acids are those required by the body to build proteins whereas nonessential amino acids are not required by the body to build proteins. 34. Amino acids can be used to synthesize proteins for cellular structure; for energy; and to synthesize proteins that function in various body processes. 35. An overweight person is one who exceeds their desirable weight by 10-20% whereas an obese person is one who exceeds their desirable weight by more than 20%. 36. Fat soluble vitamins occur in association with water, are very sensitive to the effects of heat, and are easily destroyed by cooking or food processing. 37. About 75% of the minerals are found in bones and teeth as calcium and phosphorus and their concentrations are generally regulated by homeostatic mechanisms. Multiple Choice: 38. All of the essential amino acids must be present in the body at the same time for growth and tissue repair because. a. it takes the body too long to synthesize the
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