Organism that maintains body temperature largely by heat from internal bodily functions
This article is about biological thermoregulation. For chemical reactions, see Endothermic. For the fictional character, see Endotherm (comics).Not to be confused with Endoderm.
Thermoregulation in animals
Ectotherm
Endotherm
Mesotherm
Poikilotherm
Homeothermy
Heterothermy
Stenotherm
Eurytherm
Thermolabile
Thermostability
Gigantothermy
Kleptothermy
Bradymetabolism
Tachymetabolism
Thermogenesis
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An endotherm (from Greek ἔνδον endon "within" and θέρμη thermē "heat") is an organism that maintains its body at a metabolically favorable temperature, largely by the use of heat released by its internal bodily functions instead of relying almost purely on ambient heat. Such internally generated heat is mainly an incidental product of the animal's routine metabolism, but under conditions of excessive cold or low activity an endotherm might apply special mechanisms adapted specifically to heat production. Examples include special-function muscular exertion such as shivering, and uncoupled oxidative metabolism, such as within brown adipose tissue.
Only birds and mammals are extant universally endothermic groups of animals. However, Argentine black and white tegu, leatherback sea turtles, lamnid sharks, tuna and billfishes, cicadas, and winter moths are also endothermic. Unlike mammals and birds, some reptiles, particularly some species of python and tegu, possess seasonal reproductive endothermy in which they are endothermic only during their reproductive season.
In common parlance, endotherms are characterized as "warm-blooded". The opposite of endothermy is ectothermy, although in general, there is no absolute or clear separation between the nature of endotherms and ectotherms.
An endotherm (from Greek ἔνδον endon "within" and θέρμη thermē "heat") is an organism that maintains its body at a metabolically favorable temperature...
always ectothermic, generally have a body temperature similar to that of endotherms.[citation needed] It has been suggested that the larger dinosaurs would...
Dissolving together citric acid and baking soda The terms "endothermic" and "endotherm" are both derived from Greek ἔνδον endon "within" and θέρμη thermē "heat"...
cold, endotherms increase metabolic heat production to keep their body temperature constant, thus making the internal body temperature of an endotherm more...
other behavioral thermoregulation mechanisms. In contrast to ectotherms, endotherms rely largely, even predominantly, on heat from internal metabolic processes...
Endergonic reaction Exergonic reaction Exothermic process Endothermic reaction Endotherm "Exothermic reaction". The IUPAC Compendium of Chemical Terminology. IUPAC...
A eurytherm is an organism, often an endotherm, that can function at a wide range of ambient temperatures. To be considered a eurytherm, all stages of...
thermoregulatory strategy intermediate to cold-blooded ectotherms and warm-blooded endotherms. Mesotherms have two basic characteristics: Elevation of body temperature...
size of extant endotherms is larger than those of extant ectotherms, and among taxa, Velociraptor was recovered below the extant endotherms level by reconstructing...
of another animal. It may or may not be reciprocal, and occurs in both endotherms and ectotherms. One of its forms is huddling. However, kleptothermy can...
though they varied on whether it was an ectotherm or endotherm. If Brontosaurus was an endotherm, fewer adult individuals could be sustained than if it...
sprawling aquatic animals with their tails dragging on the ground, were endotherms that lived vigorous, terrestrial lives. In 1972, Bakker expanded on his...
ability to survive hypoxic or anoxic conditions is not closely related to endotherm hibernation. Some animals can literally survive winter by freezing. For...
signals, there was an endothermic feature at about 110 K in addition to the endotherm corresponding to the ice XV-VI transition. Additionally, the Raman spectra...
Unlike birds and mammals, the opah is not a homeotherm despite being an endotherm: while its body temperature is raised above the surrounding water temperature...
heat pack. Calculations of the heat loss and retention ability of marine endotherms suggest that most extant penguins are too small to survive in such cold...
lung collapse during slight volume changes. The common ostrich is an endotherm and maintains a body temperature of 38.1–39.7 °C (100.6–103.5 °F) in its...
where the external temperature is less than their body temperature, most endotherms are able to balance heat production and heat loss to maintain a comfortable...
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