It knows because a part of your brain , called the hypothalamus, tells it to. All humans and many animals have a hypothalamus. The hypothalamus does many things, but two of its most important jobs are to maintain homeostasis and to control certain hormones. Homeostasis is very important to all animals, including humans.
So homeostasis means that something is held at the same place. Most animals maintain, or hold, their temperature at a certain level. For humans, this is about This is called maintaining homeostasis.
The hypothalamus also maintains homeostasis in lots of other ways, such as by controlling your blood pressure. The temperature in your body, like the temperature in your home, is a balance between different cooling and heating systems. The hypothalamus also controls many of your hormones. Thus, in a constant thermoneutral ambient for instance, they are not playing any role in effecting the balance between metabolic heat production and heat loss that establishes brain and core temperatures.
National Center for Biotechnology Information , U. Journal List Temperature Austin v. Temperature Austin.
Published online Oct Author information Article notes Copyright and License information Disclaimer. Letter on: Kobayashi S. Received May 5; Accepted May 5. Keywords: brain temperature, thermostat, thermoregulation, thermoTRP channels, thermoregulatory behavior. In the latter case alterations in arterial oxygen concentration would be avoided. On encountering a rapid increase in water temperature carp quickly increase the ventilation of their gills for about 3 0 seconds; the response then diminishes.
Thus fishes appear to utilize both central and peripheral thermal information to project changes in oxygen demand. Two populations of thermosensitive neurons have been identified : one that responds to a local warming of the brain tissue and another that responds to a local cooling. The hypothalamic neurons of the nonhibernator had a narrow range of temperature sensitivity and were mostly silent below a temperature of 3 0 degrees C.
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