PORTAGE NUTRITION BIOD 121 EXAM 1 QUESTIONS WITH DETAILED VERIFIED ANSWERS (100% CORRECT ANSWERS) - ALREADY GRADED A+ True or False. If false, explain why it is false. Nutritional value and taste are often the 2 most important reasons specific foods are consumed in North America. - ANS-False: Taste and texture are often the 2 most important reasons specific foods are consumed in North America. True or False: Nutrition is the science that links foods to health and disease. - ANS-True Explain the difference between Internal and External drives that influence our desire to eat. - ANS-The internal drive is hunger and is associated with negative sensations like churning, growling and pain in the stomach. External drives have to do with appetite and are associated with positive food sensations and lead us to eat when we are not hungry. You are at an "all you can eat'' buffet. On the first pass through the line, you fill your plate with a large quantity of foods. After eating it, you go back for a second portion of the foods you liked. However, the food is less appealing the second time around, and you place a smaller quantity on your plate because you feel full. Considering the physiology as you eat, (1) explain what hormones are released (list specifically) as the stomach stretches. (2) List the area of the brain that provides neural regulation and appetite suppression to inhibit eating. - ANS-As the stomach is filled and stretches, hormones are released that cause satiety (Leptin, serotonin, cholecystokinin (CCK). These hormones can travel to the brain (hypothalamus) and activate the satiety center. 1. The hormones being released as the stomach stretches is leptin, seratonin, and CCK. These hormones decrease hunger, in specific leptin. They acitvate the satiety center in the brain which creates a sense of fullness. 2. The area of the brain that provides nerual regulation and appetite suppression to inhibit eating is the satiety center.
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