PSB-2000 Lecture Notes - Lecture 12: Blood Sugar, The Water Hole, Enteric Nervous System
11 Oct 2017
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Document Summary
Energy is delivered to the body as . Two main hormones regulating glucoses and satiety. Low levels of insulin and glucose are hunger signals. High levels of insulin and glucose promote satiety. Promotes conversion of fatty acids to ketones for body to use as fuel. Set point theory: hunger is a response to an energy need; we eat to maintain an energy. Positive incentive: value of eating depends on interaction of many flavors. Humans have preferences for sweet and savory foods. These flavors are typically present in nutrient-dense food. Apple (sweet) or avocado (fatter) vs. celery. Animals will select diets which provide essential vitamins and minerals. Such allelic variation can affect food perception, choice, and consumption and thus can influence nutrition and predispose to certain diseases. Rats selectively bred for sucrose-consumption were more dominant and illness. Increase in insulin and decrease in blood glucose. You body is in homeostatic balance until food is introduced, which is disruptive.
