PSY BEH 11B Chapter Notes - Chapter 12: Full Fat, Vasoconstriction, Homeostasis
26 May 2016
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Document Summary
Instincts were once used to categorize innate actions, but the list became unorganized and extensive. Bernard said that organisms have external and internal (biochemical) environments: the internal environment stays relatively constant, so the organism must be capable of making substantial changes to prevent too much internal change, this is homeostasis. Drive internal state of biological and psychological tension from a deviation from homeostasis. Thermoregulation the process by which organisms maintain a constant body temperature. Mammals and birds are endotherms (stable body temperatures) Most other organisms are ectotherms (variable body temperatures) Autonomous nervous system (ans) has the sympathetic branch (rev up) and parasympathetic branch (calm down) Vasodilation wide(cid:374)i(cid:374)g of the ski(cid:374)"s (cid:272)apilla(cid:396)ies to se(cid:374)d (cid:449)a(cid:396)(cid:373) (cid:271)lood to the su(cid:396)fa(cid:272)e to (cid:396)elease heat. Vasoconstriction co(cid:374)t(cid:396)a(cid:272)tio(cid:374) of the (cid:272)apilla(cid:396)ies that s(cid:395)ueeze (cid:271)lood a(cid:449)ay f(cid:396)o(cid:373) the (cid:271)ody"s (cid:272)old pe(cid:396)iphe(cid:396)y to keep a warmer core. Homeostasis is controlled by anticipation as well as current problems. Liver converts glucose to glycogen and vice versa.
