NUTR 2150 Lecture Notes - Lecture 2: Postprandial, Very Low-Density Lipoprotein, Blood Sugar
19 Oct 2016
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Document Summary
Big molecules like starches and proteins cannot be broken down and absorbed on their own, they need to be chemically treated in your body first. Physiological responses: hunger: the physiological response to needing nutrition. Initiation of consumption of food: satiation: the signal to stop eating, satiety: the length of time between the end of ingestion of the first meal, and the beginning of hunger for the next meal. Psychological response: appetite: the mental response/desires we feel for food. Involves a lot of secretions: 7l a day recycled liquids. Uptake of small molecules into the body. Utilization of the small molecules for energy and as nutrients. Lumen: the inside of the gi tract, outside the body. Mouth: mastication, introduce saliva, some amylase enzymes, produce bolus. Stomach: secretes gastric juice, physical break down of food structure, sterilization to get rid of microorganisms (done with the acid)
