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Encyclopedia > Core temperature

Core temperature is the operating temperature of an organism, specifically in deep structures of the body such as the liver, in comparison to temperatures of peripheral tissues. Some physicians believe temperature taken in the rectum is closest to core temperature. Ear temperatures also accurately reflect core body temperature, since the eardrum shares blood supply with the temperature control center in the brain, the hypothalamus. Therefore, changes in body temperature are reflected sooner and more accurately in the ear than at other sites. Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... In biology and ecology, an organism (in Greek organon = instrument) is an assembly of molecules that influence each other in such a way that they function as a more or less stable whole and have properties of life. ... The liver is an organ in vertebrates, including humans. ... The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx. ...


Influencing factors on other areas where temperatures are taken:

  • Oral temperatures are influenced by drinking, eating and breathing.
  • Rectal temperatures lag behind changes in core body temperature and there is a risk of cross-contamination.
  • Skin temperatures, measured under the arm or at the forehead, are not always reliable indicators of core body temperature, especially during those critical times when core body temperature is increasing or decreasing. This is because the skin is a tool the body uses to control core body temperature. For example, when fever is increasing people are likely to react by shivering and drawing in heat from the increase core body temperature. Skin temperatures are further influenced by factors such as fever lowering medication, clothing and external temperature.

Temperature is part of a homeostatic mechanism designed to keep the organism at optimum operating temperature. Most of the time these temperatures allow enzymes to work in chemical reactions. Homeostasis or homoeostasis is the property of an open system, especially living organisms, to regulate its internal environment so as to maintain a stable condition, by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms. ... Neuraminidase ribbon diagram An enzyme (in Greek en = in and zyme = blend) is a protein, or protein complex, that catalyzes a chemical reaction and also controls the 3D orientation of the catalyzed substrates. ... A chemical reaction is a process involving one, two or more substances (called reactants), characterized by a chemical change and yielding one or more product(s) which are different from the reactants. ...


In humans this optimum temperature is 37 °C (98.6 °F). The condition of being at optimum temperature is called afebrile or apyrexic. Binomial name Homo sapiens Linnaeus, 1758 Subspecies Homo sapiens idaltu (extinct) Homo sapiens sapiens Human beings define themselves in biological, social, and spiritual terms. ...


  Results from FactBites:
 
Core temperature - Wikipedia, the free encyclopedia (173 words)
Core temperature is the operating temperature of an organism, specifically in deep structures of the body such as the liver, in comparison to temperatures of peripheral tissues.
Temperature control (thermoregulation) is part of a homeostatic mechanism designed to keep the organism at optimum operating temperature, as it affects the rate of chemical reactions.
Temperature examination in the rectum is the traditional gold standard measurement used to estimate core temperature (oral temperature is affected by hot or cold drinks and mouth-breathing).
Outcomes Research Temperature Monitoring (1659 words)
Core temperature should thus be measured during spinal or epidural anesthesia in patients whom clinicians believe likely to become hypothermic.
The core thermal compartment is composed of highly perfused tissues whose temperature is uniform and high compared with the rest of the body.
Ambient temperature should be kept between 21 degrees C and 24 degrees C for adults; and between 21 degrees C and 26 degrees C for children, with a relative humidity level of 40-60 percent.
  More results at FactBites »

 
 

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