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HOMEOSTASIS AND RESPONSE: HOMEOSTASIS AND BODY TEMPERATURE (KEY WORDS…
HOMEOSTASIS AND RESPONSE: HOMEOSTASIS AND BODY TEMPERATURE
IMPORTANCE OF HOMEOSTASIS
automatic control systems may involve
chemical responses
nervous responses
homeostasis maintains optimal conditions for enzyme actions and all cell functions
homeostasis is the regulation of the internal conditions of a cell or organism in response to internal and external changes
include control of
blood glucose concentration
body temperature
water and ion levels
CONTROL SYSTEMS
receptors: detect stimuli (changes in the environment)
CONTROL OF BODY TEMPERATURE
KEY WORDS
homeostasis
receptors
effectors
negative feedback
thermoregulatory centre
vasodilation
vasoconstriction