PSYCH 220 Lecture 7: Chapter 9
Document Summary
Chapter 9: homeostasis: active regulation of the internal environment. Homeostasis maintenance of a stable, balanced internal environment: normal everyday baseline. Physiological and behavioral systems are responsible for this. Changes in the internal environment can affect motivation. Motivation the psychological process that induces or sustains a certain behavior. Endotherms organisms that generate their own heat through internal processes: humans have a lot of mechanisms in place to monitor the outside temperature and adjust the body. Ectotherms organisms that get most of their heat from the environment. Negative feedback systems primary homeostatic mechanisms. If temperature increases, the heat system shuts off to bring it back to normal: positive feedback temperature increases, so the feedback is to continue to increase the temperature. Set zone the range of tolerance in a system. If the body deviates from a set point, compensatory action initiates: redundancy monitored by more than one mechanism. E(cid:454): setti(cid:374)g two alar(cid:373)s i(cid:374) case o(cid:374)e does(cid:374)"t work.
