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Gigantothermy (sometimes called ectothermic homeothermy or inertial homeothermy) is a phenomenon with significance in biology and paleontology, whereby large, bulky ectothermic animals are more easily able to maintain a constant, relatively high body temperature than smaller animals by virtue of their smaller surface-area-to-volume ratio. [1]
Heat loss is a major threat to smaller creatures, as they have a larger ratio of surface area to volume. Small warm-blooded animals have insulation in the form of fur or feathers. Aquatic warm-blooded animals, such as seals, generally have deep layers of blubber under the skin and any pelage (fur) that they might have; both contribute to their ...
All organisms metabolize food and other inputs, but some make better use of the output than others. Like all energy conversions, metabolism is rather inefficient, and around 60% of the available energy is converted to heat rather than to ATP. [7] In most organisms, this heat dissipates into the surroundings.
The first is shivering, in which a warm-blooded creature produces involuntary contraction of skeletal muscle in order to produce heat. [26] In addition, shivering also signals the body to produce irisin , a hormone that has been shown to convert white fat to brown fat , which is used in non-shivering thermogenesis, the second type of human ...
Warm-blooded animals could have gained an advantage by creating an inhospitable environment for many disease-causing organisms, thus reducing the risk of infections. Insulation and Thermoregulation : Homeothermy could have originated as a response to the development of insulating structures like fur, feathers, or other coverings.
Turning your slow cooker on with the clamps firmly in place can be hazardous: Steam may build up and affect the way your food cooks or, in extreme cases, cause the lid or the crock to crack.
Two new studies indicate the importance of getting a good night's sleep — with one study saying a lack of sleep may be sabotaging the brain’s ability to keep intrusive thoughts at bay.
Animals can be further categorized as endotherms, which regulate their temperature internally, and ectotherms, which regulate temperature by the use of external heat sources. "Warm-bloodedness" is a complex and rather ambiguous term, because it includes some or all of: Homeothermy, i.e. maintaining a fairly constant body temperature.
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