PSYCH 112 Lecture Notes - Endocrine System, Homeostasis, Hypothalamus
Document Summary
Biological motives hunger, thirst, sex, maintain temperature, excrete waste, maintain medium arousal. Social motives achieve, bond, be autonomous, establish dominance, express oneself, learn. Nervous system is partnered with endocrine system. Hypothalamus plays a big role in homeostasis. Nervous and endocrine systems are specialized for command-and-control of our bodies. Thermoregulation body is only comfortable within certain body temperatures. Too cold or too hot makes the body uncomfortable. Circadian rhythm bodies rhythm, they adjust to whatever your lifestyle is (think jet-lag) Heating constriction of surface blood vessels, raising of small body hairs, shivering. Cooling dilation of surface blood vessels, lowering of small body hairs, perspiration. Command and control is centralized for informed control of behavior. Ultradian rhythms, > 24 hours, menstrual cycle and annual cycles. Circadian rhythms, ~24 hours, sleep and waking. Hydration how much water is in the system. Blood plasma liquid part of blood, volume. Blood plasma osmolality has to do with how concentrated other things are in the blood.
