Endotherm
Endotherm
Endotherm (pronunciation: /ˈɛndəˌθɜːrm/) is a term used in biology and physiology to describe organisms that maintain a constant body temperature independent of the environment. The term is derived from the Greek words "endo," meaning inside, and "therm," meaning heat.
Etymology
The term "endotherm" was first used in the mid-19th century and is derived from the Greek "endo," meaning "inside," and "therm," meaning "heat." This refers to the ability of these organisms to generate heat internally to maintain a stable body temperature.
Definition
An endotherm is an organism that is internally warmed by a heat source such as metabolic processes, which is typically maintained regardless of the external temperature. This is in contrast to ectotherms, which rely on external sources of heat to regulate their body temperature.
Characteristics
Endotherms use internally generated heat to maintain a stable body temperature, often above the temperature of their environment. This allows them to remain active in a wide range of environments. Examples of endotherms include mammals and birds, which maintain high body temperatures even in cold environments.
Related Terms
- Ectotherm: An organism that relies on external sources of heat to regulate its body temperature.
- Homeotherm: An organism that maintains a stable internal body temperature regardless of external influence.
- Poikilotherm: An organism whose internal temperature varies considerably.
- Thermoregulation: The process by which organisms maintain their body temperature within certain boundaries.
See Also
External links
- Medical encyclopedia article on Endotherm
- Wikipedia's article - Endotherm
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