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VW Temp Regulation
IS-B1-Temperature Regulation
| Question | Answer |
|---|---|
| Heat input + heat production > heat output, then _ in body temp occurs. | Increase |
| Which fluctuates more - skin temperature or core temperature? | Skin temperature |
| Between what two measures of ambient temperature can the body maintain core temperature homeostasis? | 55 F and 130 F |
| What is the range for normal temperature in most people? | 97 to 99.5 |
| Above 101 F is only found in situations like what? | Fever or Hard Exercise |
| Normal regulation of temperature inside the body can occur between what temperatures? | 95 F and 105F |
| Name the 2 main types of temperature receptors. | Hypothalamus and Skin |
| True or False - Hypothalamus has a greater number of heat sensitive neurons than cold sensitive neurons. | True |
| True or False - The Skin has a greater number of cold sensory receptors than heat sensory receptors. | True |
| What is considered the temperature regulation center of the brain? | Hypothalamus |
| Name 4 ways the body can adjust to regulate the core temperature of the body. | 1) sweating 2) vasodilation/vasoconstriction 3) physical activity/metabolism (hormones) 4) behavioral responses (clothing, shelter) |
| How does the body manipulate the vasculature to increase or decrease heat loss? | Vasoconstriction (decrease heat loss) Vasodilation (increase heat loss) |
| When there is a decrease in body temperature, the sympathetics in skin stimulate blood vessels via norepinephrine which causes what? | Reflex vasoconstriction |
| When there is an increase in body temperature, the sympathetic stimulation to the sweat glands increases which releases acetylcholine and some other unknown factor which results in what? | Vasodilation of skin vessels |
| What is the set point temperature? | 37.1 degrees Celsius |
| If the core temperature is greater that the set point, how does the hypothalamus respond? | 1) decreased muscle activity and chemical heat production 2) decreases adrenergic sympathetic stimulation -increase cutaneous vasodilation 3) increase sweating |
| True or false - the temperature of the skin has no bearing on the response of the hypothalamus when interpreting temperature. | False - skin alters strength of the response. |
| If the core temperature is lower than the set point, how does the hypothalamus respond? | 1) increases muscle activity and chemical heat production 2) increases adrenergic sympathetic stimulation which causes reflex vasoconstriction 3) decreases sweating |
| When exogenous pyrogens (infections) or endogenous pyrogens (cytokines) increase, they influence prostaglandins to increase what? What does this cause? | The set point. A fever |
| Heat stroke occurs when the temperature rises above _ degrees F. | 105 |
| What is a common side effect of heat stroke? | decreased brain perfusion |
| What can occur in the case of severe hypothermia? | Ventricular Fibrillation. |
Created by:
cherubicsiren
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