Case study Physiology

May 29th, 2015
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University of Georgia
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A fever occurs when the body maintains a higher temperature, primarily in response to an infection. To reach the higher temperature, the body moves blood to the warmer interior, increases the metabolic rate, and induces shivering.

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Febrile seizure are convulsions brought on by a fever in infants or small children. These convulsions occur without any brain or spinal cord infection or other nervous system (neurologic) cause. During a febrile seizure, a child often loses consciousness and shakes, moving limbs on both sides of the body. Less commonly, the child becomes rigid or has twitches in only a portion of the body. Most febrile seizures last a minute or two; some can be as brief as a few seconds, while others last for more than 15 minutes.PhysiologyA healthy person's body temperature fluctuates between 97F (36.1C) and 100F (37.8C), with the average being 98.6F (37C). The body maintains stability within this range by balancing the heat produced by body metabolism with the heat lost to the environment. The "thermostat" that controls this process is located in the hypothalamus, a small structure located deep within the brain. The nervous system constantly relays information about the body's temperature to the hypothalamus, which in turn activates different physical responses designed to cool or warm the body, depending on the circumstances. These responses include: decreasing or increasing the flow of blood from the body's core, where it is warmed, to the surface, where it is cooled; slowing down or speeding up the rate at which the body turns food into energy (metabolic rate); inducing shivering, which generates heat through muscle contraction; and inducing sweating, which cools the

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