ENDOTHHERMS - maintainingbody temperature
- Created by: Remya Salimkumar
- Created on: 03-06-15 13:06
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- ENDOTHHERMS - maintainingbody temperature
- PHYSIOLOGICAL
- Sweat glands
- secretes more sweat, water evaporates in sweat using heat from blood
- latent heat
- panting increases evaporation
- latent heat
- Less sweat secreted
- less water evaporation so less loss of latent heat
- secretes more sweat, water evaporates in sweat using heat from blood
- Hair erector muscles
- hair lie flat
- little insulation
- more heat lost by convection and radiation
- little insulation
- Erector muscles contract- hair stand up
- trap a layer of insulatiing air
- reducing heat loss from skin
- trap a layer of insulatiing air
- hair lie flat
- Liver cells
- rate of metabolism reduced
- less heat generated from exergonic reactions
- rate of metabolism increased
- more heat generated
- heat transferred to blood
- more heat generated
- rate of metabolism reduced
- skeletal muscles
- no spontaneous contractions
- Spontaneous contractions
- generate heat as muscle cells respire more
- Arterioles leading to capillaries in skin
- vasoconstriction
- reduces blood flow through capillaries near skin surface
- less heat radiated
- reduces blood flow through capillaries near skin surface
- Vasodilation
- allows more blood into capillaries near skin surface
- more heat radiated from skin
- allows more blood into capillaries near skin surface
- vasoconstriction
- Lungs,mouth and nose
- panting increases evaporation
- does not pant
- less water evaporates
- Sweat glands
- BEHAVIOURAL
- Too hot
- Move into shade or hide in burrow
- Orientate body to decrease surface area exposed to sun
- Remain inactive and spread out limbs to increase surface area
- Too cold
- Move into sunlight
- orientate body to sun to expose surface areas exposed to sun
- Move about to generate heat in muscles
- Too hot
- PHYSIOLOGICAL
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