Body temperature is controlled through the process of thermoregulation, which allows the body to maintain a consistent temperature at its core. Homeostasis is the state which occurs when thermoregulation is successful.Continue Reading
The only safe body temperatures are between 98 and 100 degrees Fahrenheit. Thermoregulation itself is a three-step process that begins with the central nervous system in an attempt to keep the body temperature within this range. When the central nervous system sends messages to the hypothalamus that the body's internal temperature is changing, one of several mechanisms is activated in an attempt to restore homeostasis. The body may first produce excess sweat in an attempt to cool off the skin and lower its temperature. The body may also dilate the capillaries near the skin to allow the blood to release heat through the surface.
There are heat and cold receptors in the skin that allow the central nervous system to respond to heat or cold in the first place, triggering these crucial temperature adjustments. The body can also produce heat when its temperature gets too low. To do so, the body may also activate the thyroid gland in extremely cold temperatures, increasing metabolism which, in turn, produces more heat.Learn more about Biology
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Body chills are a sign that the body is raising its temperature fighting an infection. The brain elevates the setpoint of the body's temperature to create an environment inhospitable to bacteria and viruses. The muscle contractions in chills are the body's way of increasing its temperature.Full Answer >
Mantle conviction is the process in which heat is transferred from the Earth's core to its surface; heat is released from the core and rises, causing temperature fluctuation where the excess temperature from the hot magma is transferred to the colder areas above it and eventually to the Earth's surface. An everyday example of this process is boiling water; hot water from the bottom of the pot rises to transfer energy to the cooler water at the top, which sinks to the bottom.Full Answer >