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To generate heat, warm-blooded animals convert the food that they eat into energy. They have to eat a lot of food, compared with cold-blooded animals, to maintain a constant body temperature. Only a small amount of the food that a warm-blooded animal eats is converted into body mass.
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By viewing animals with a thermal infrared camera, we can actually "see" the differences between warm and cold-blooded animals. Infrared also allows us to study how well feathers, fur and blubber insulate animals.
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Ectotherm - Wikipedia, the free encyclopedia
Ectothermic, from the Greek ectos , "outside" and therme , "heat," (sometimes confusingly known as "cold-blooded") refers to organisms that control body temperature through external means. As a r...
en.wikipedia.org/wiki/Ectotherm |
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Because cold-blooded animals do not use internally-generated energy to regulate body temperature, they require far less energy than warm-blooded animals. ... The brains of cold-blooded animals tend to be less complex, requiring less energy. At one time it was assumed dinosaurs were slow moving, dim-witted cold...
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Cold-blooded animals have a body temperature close to the temperature of their surroundings. ... Cold-blooded animals can and do experience big swings (changes) in their body temperature. When the temperature warms up, cold-blooded animals become more active. If the temperature is too cold, these animals aren't active at all!
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Temperature explains much of why cold-blooded organisms such as fish, amphibians, crustaceans, and lizards live longer at higher latitudes than at lower latitudes, according to research published this week in the Proceedings of the ... "The same rules that apply to a liquid inside a beaker should apply to animals.
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Limpets Reveal Possible Fate Of Cold-blooded Antarctic Animals (July 24, 2007) — A limpet no bigger than a coin could reveal the possible fate of cold-blooded Antarctic marine animals according to new research.
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The relative amounts of the different forms of morphine, and many other pharmacologic agents, depend on temperature and pH. ... Persons who administer pharmacologic agents to ectotherms (that is, cold-blooded animals) should consider the effect of temperature on the relative amounts of the different forms of drugs.
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Fiziol Zh SSSR Im I M Sechenova. 1989; 75(12):1708-13 (ISSN: 0015-329X) ... Bliakhman FA; Izakov VIa; Shkliar TF; ... The catecholamines in low concentrations up to 5.10(-8) M decelerate the relaxation, and in higher concentrations accelerate the drop of mechanical tension in capillary muscles of the cat ventricular myocardium.
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