Homeostasis

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  • Publicado : 27 de agosto de 2012
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Index
General and specific objectives………………………….1

What´s homeostasis………………………………………….2

How the homeostasis affects the human body…..5

Conclusion…………………………………………………………8Anexes……………………………………………………………...8

Bibliography………………………………………………………9
General objective: To learn more about the homeostasis and how do it affects the animals and living things.
Specific objectives:
* Investigate on books, on the webor any other information source about homeostasis.
* Do a power point presentation to expose about all the information founded.



What is the homeostasis?

The origin of the word isfrom the Greek: homeo, meaning unchanging + stasis, meaning standing.

The homeostasis is the property of a system that regulates its internal environment and tends to maintain a stable, constantcondition of properties such as temperature or pH. It can be either an open or closed system.

Basically, homeostasis is the process that the body uses to stabilize the internal conditions of the body.One of the most important examples of homeostasis is the regulation of body temperature. Not all animals can do this. With regard to any given life system parameter, an organism may be a conformeror a regulator. On one hand, regulators try to maintain the parameter at a constant level over possibly wide ambient environmental variations. On the other hand, conformers allow the environment todetermine the parameter. For instance, endothermic animals (mammals and birds) maintain a constant body temperature, while ectothermic animals (almost all other organisms) exhibit wide body temperaturevariation.


In the case of humans, that are regulators, homeostasis happens when the body regulates body temperature in an effort to maintain an internal temperature. For example, we sweat tocool off during the hot summer days, and we shiver to produce heat during the cold winter season.

Otherwise, behavioral adaptations allow ectothermic animals to exert some...
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