6 Homeostasis (2) - Homeostasis Basis of report worksheet 3...

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Homeostasis Basis of report worksheet 3 Student Resource Manual: Aluminum Animals (pg. 1), Rate (pg. 40)
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Homeostasis Homeostasis : a property of a living organism; regulation of the internal environment so as to maintain a stable, constant condition. We cannot control the environment so our bodies have to react to remain within some livable limits. Homeostasis has survival value because it means an animal can adapt to a changing environment. The body will attempt to maintain the desired level of a factor to achieve homeostasis. -Work within tolerable limits.
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Homeostasis What does an organism need to regulate? Ion levels (Na+, K+, O 2 ) Nutrients: Sugar levels Water levels TEMPERATURE http://www.biology-online.org/4/1_physiological_homeostasis.htm
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Exchanging Heat with the Environment What are some sources of heat gain or loss? Surfaces → Conduction Air Convection Sun Radiation Evaporation
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Regulating Temperature 2 categories of organisms based on how they regulate their temperature Homeotherm : Capable of maintaining its body temperature within a narrow range Temperature is usually above that of its surroundings despite large variations in environmental temperature. www.googleimages.com
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Regulating Temperature Poikilotherm : Body temperature fluctuates with that of the environment.
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