Homeostasis refers to the processes living things use to remain internally stable and survive. The human body maintains steady temperatures and levels of salt, fat, oxygen, sugar, and water to keep optimal function. For example, when the body is overheated, it facilitates sweating to cool itself down. If it needs to retain heat, the body stops sweating and reduces blood circulation to your skin. Homeostasis also refers to mental or psychological stability. Under stress, the mind works with chemical responses to lower anxiety.
Regulating the level of heat in the body is one of the primary aims of homeostasis. Humans are warm-blooded, or endotherms, which means the processes that maintain our internal body temperatures are located inside us, unlike reptiles and amphibians, exotherms whose body temperatures are influenced by the environments. Humans have a normal body temperature of 98.6 degrees Fahrenheit. This temperature helps the organs and bodily systems function properly. Humans must maintain an ideal temperature to surviving. An organism's size determines the requirements for and responses towards homeostasis. Larger organisms produce more heat, and smaller organisms lose more body heat than they produce, so their bodies have to work harder to reach thermoregulation or normal body temperature.
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