It was July 20 in Houston and the fourth straight day that would have a high tem

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It was July 20 in Houston and the fourth straight day that would have a high temperature above 100°F Janice was running some errands and decided to stop by her mother's house. Janice's mother, Marian, was eighty-four and in pretty good health. She was able to keep up with her housekeeping and still tended a small garden in her backyard. Just that morning, Janice had told her mother not to spend too much time working in the garden today. Janice knew that the heat could be dangerous, especially to the elderly, and her mother's place didn't have an air conditioner, but Janice felt that her mother was alert enough to know her own limits When Janice reached her mother's house, she found her mother unconscious on the couch in the living room. All the windows in the house were closed. Janice immediately tried to rouse her mother and was able to get her to say a fw words, but Marian seemed delirious. Janice grabbed the telephone and called for help. The emergency services operator instructed Janice to apply cold wash cloths to her mothers forehead and face and if possible to position her mother in front of a fan while using a spray bottle to spray tepid water on her skin When the paramedics arrived, Marian was conscious but confused and feeling nauseous. At the hospital the doctor told Janice just how lucky she was to have visited Marian at that moment. He informed Janice that Marian had suffered heat stroke, a form of hyperthermia and that Janice's quick action at the house had saved her mother's life. Marian was making rapid progress to recovery but electrolytes intravenously and was going to stay in the hospital overnight for observation was being given fluids and Hyperthermia occurs when the body temperature increases without an increase in the set point of the thermoregulatory center in the hypothalamus. Heat exhaustion and heatstroke are two common forms of hyperthermia. Symptoms of heat exhaustion include thirst, fatigue, profuse sweat, and giddiness or delirium. Individuals with heat exhaustion generally have a normal or only slightly elevated body mperature and the symptoms are the result of the loss of water and electrolytes. Symptoms of heatstroke include a temperature of 104'F, absence of sweating, and loss of consciousness. If untreated, heat exhaustion precedes heatstroke, and heat stroke is often fatal. Treatment for hyperthermia consists of reducing the body brain as tissue damage can result if the body temperature rises above 109*F temperature to normal. Special attention is placed on reducing the temperature of the

Explanation / Answer

Q1).

Homeostasis is the maintenance of a stable internal environment of our body. Temperature in our body is regulated via homeostatic mechanisms.

Hyperthermia is defined as it is condition of increased body temperature due to failure of thermoregulation that happened when our body produces or absorbs more heat than normal. Homeostasis does not work sometimes due to external factors. For example: heat, cold.

Q2). Temperature is regulated in the body by the homeostatic mechanism. Blood circulation is one of the factors to retain homeostasis. This can be achieved by the vasodilation of dermal blood vessels. The increased blood flow in the allows the heat from the internal body to dermal and that temperature leave the body via radiation and evaporation.

Q3). Water present on the skin that absorbs body temperature and it evaporate off the skin. so we felt like relax.

4Q). Vasodilatation and Vasoconstriction are opposite words. Vasodilatation is a mechanism that cools our body. Vasoconstriction would not help to lower the body temperature.

Shivering is mechanism means shaking of the body muscles to produce heat, so it won’t helpful.

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