•Homeostasis- Warm-blooded mammals maintain a relatively constant body temperature regardless of
ambient conditions- humans 37oC
•Homeostasis achieved by control mechanisms that regulate
heat production and loss
•Core body temperature drop of a few degrees reduces enzymatic activity, coma, death
•Core body temperature increases of a few degrees may irreversibly damage the central nervous system
•C Van Wie (1974) Physiological response to cold environments. Arctic & Alpine Enviornments