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Homeostasis Homeostasis involves various processes to keep the conditions inside the body constant. This allows conditions outside the body to change and have no immediate effect on the body. This needs to happen so that biochemical reactions inside the body can continue. The enzymes involved in these reactions are sensitive to changes in temperature and pH. If the environment is not kept constant these enzymes may denature. A constant water potential also needs to be kept so that osmosis can occur, supplying surrounding cells with their fluid. Homeostatic systems are used to decrease the impact of fluctuating conditions outside the body. To do this several organs must be co-ordinated so that the relevant information can be sent to and from the brain. Homeostasis is usually achieved by a process called negative feedback. This is how receptors in the body detect a change in the level of an interior factor. This then activates effectors...

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