Psychology 2220A/B Lecture Notes - Lecture 12: Simple Living, Lipogenesis, Leptin
16 Jun 2016
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Document Summary
Digestion is the gastrointestinal process of breaking down food and absorbing its constituents into the body. When thinking of digestion think of the body as a simple living tube with a hole at each end. After a mean a person"s energy resources are assumed to be near their set point and to decline thereafter as the body uses energy to fuel its physiological processes. When the level of the body"s energy resources falls far enough below the set point, a person becomes motivated by hunger to initiate another meal. The meal continues according to the set point assumption until the energy level returns to its set point and the person is no longer hungry. All set point systems have three components: a set point mechanism, a detector mechanism and an effector mechanism. The glucostatic and lipostatic theories were viewed as complementary not mutually exclusive.
