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Thermoregulation - Anatomy & Physiology (view source)
Revision as of 15:21, 5 August 2008
, 15:21, 5 August 2008no edit summary
*Increased Heat Production - muscles receive messages from the brain causing shivering. This causes increased heat production as the muscle cells respire.
*Increased Heat Production - muscles receive messages from the brain causing shivering. This causes increased heat production as the muscle cells respire.
*Respiration - this may be increased as respiration is an exothermic reaction.
*Respiration - this may be increased as respiration is an exothermic reaction.
==Specialised Temperature Regulation==
*Some animals can maintain their body temperature by behavioural adjustments:
eg Lizards bask in the sun during the day, and when they overheat they hide under rocks to allow their body temperature to fall.
*Some animals living in particularly cold areas are ''regionally heterothermic'' and are able to allow their less insulated extremities to cool to temperatures much lower than their core temperatures, minimising heat loss through exposed body parts such as hooves, legs, feet, nose.
*Hibernation occurs in some species in order to allow survival during times of limited food resources and low temperatures.
*Estivation occurs in the summer, allowing some animals to survive periods of high temperature and minimal water (eg turtles burrow into pond mud).
*Daily Torpor occurs in small endotherms eg bats and hummingbirds who temporarily reduce their high metabolic rates in order to conserve energy.