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Health And Social Care Level 3 Unit 12 D1

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Unit 12- D2& D3
Part 1: fight or flight response
Fight or flight response, is the response to a serious threat to the survival that is marked by physical changes that include nervous and endocrine changes that prepare body to react. The process of this is that the nervous impulses are sent to the brain. Then the hypothalamus sends increased signal down to sympathetic nerve to activate muscles and glands that also include adrenal glands. Then the adrenal glands produce adrenaline hormones, noradrenaline and cortisol that act on gland and muscles.
Fight or flight response is produced when the hypothalamus activates adrenal-cortical glands system and sympathetic nervous system. Sympathetic nervous system use nerve pathway and the adrenal-cortical system use bloodstream to pledge reaction in body. Sympathetic nervous system send impulses to the smooth muscles and glands, it tells adrenal glands to release adrenaline and noradrenaline into blood streams. These are the stress hormones and they cause several changes in body that include the increased blood …show more content…
There are many causes of fever but the most often is associated with the infection. During pyrexia blood and urine volume are reduces as a result of loss of water through increase sweat. The body protein is broken down very quickly, leading to increased evacuation of nitrogenous product in urine. When bacteria attack the body and cause the injury to tissue, one of the immune system responses is to produce pyrogens. These chemicals are carried by blood to the brain where it interrupts the working of hypothalamus that is the part of the brain that controls body temperature. Pyrogens prevent heat sensing neurons and stimulate cold sensing neurons and changing of these temperature sensor devices the hypothalamus thinking the body is cooler. In response hypothalamus raises body temperature above normal causing pyrexia. (UNKNOWN,

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