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principles homeostas

homeostasis

TermDefinition
homeostasis maintenance of a stable internal environment
negative feedback when the body signals a system to to stop something in order to maintain homeostasis
positive feedback when the body signals a system to continue doing something.
example of negative feedback When a person exercises very hard, the muscles do not get enough oxygen lactate builds up in the muscle which causes muscle fatigue and pain, once the exercise stops, the lactates are carried away from the muscles, and the pain stops.
example of positive feedback If an infection is present, the body may respond with a fever. If the infection continues to the spread and develop, the body may continue to raise it's temperature in an attempt to rid itself of the infection.
thermogenesis internal heat production
shivering example of internal heat production
evaporation heat loss from converting water from liquid to vapor
conduction heat loss through direct contact between objects
convection heat loss where one object is in motion
radiation heat loss due to temperature gradient
Created by: cbiondillo
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