PSY 2501 Study Guide - Midterm Guide: Circumventricular Organs, Extracellular Fluid, Ventricular System

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Redundancy: the property of having a paricular process, usually an important one, monitored and regulated by more than one mechanism. Homeostasis: referring to the acive process of maintaining a paricular physiological parameter relaively constant. Set point: the point of reference in a feedback system; example: seing of a thermostat. Set zone: the range of a variable that a feedback system tries to maintain. Endotherm: an animal whose body temperature is regulated chiely by internal metabolic processes; example include mammals and birds. Ectotherm: an animal whose body temperature is regulated by, and whose heat comes mainly from, the environment; example include snakes and bees. Metabolism: the breakdown of complex molecules into smaller molecules. Kilocalorie (kcal): a measure of energy commonly applied to food; formally deined as the quanity of heat required to raise the temperature of 1 kg of water by 1 degree cenigrade. Brown adipose tissue: a specialized type of fat issue that generates heat through intense metabolism.