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15 Cards in this Set

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  • Back
What part of the brain regulates the factors involved with production of heat and its loss or conservation?
Hypothalamus
What is the metabolic activity called that maintains cellular functions at rest and provides a constant supply of heat?
Basal metabolism
What are the five (5) primary ways heat can be lost from the body
1. Radiation (60% of heat loss)
2. Conduction (15% of heat loss)
3. Convection
4. Evaporation (22% of heat loss)
6. Breathing
What is the transfer of heat in the form of infrared heat rays?
Radiation
What is the transfer of heat to objects in direct contact with the body called?
Conduction
Heat is carried away by air currents, removing the warmed air and replacing it with cooler. What is this called?
Convection
Heat loss from the body when moisture vaporizes on the body's surface is called?
Evaporation
Freezing of the water between and within body cells, resulting in ice crystal formation is called?
Frostbite or frostnip
Core body temperature lower than 95º F (35º C) is called?
Hypothermia
What is the involuntary contraction of small groups of muscles, which can generate great amounts of heat called?
Shivering
Amnesia and slurred speech may appear as signs that the central nervous system is affected by a low core body temperature at what temperature?
92º F
Shivering is a sign of mild hypothermia and can start and stop at what temperature levels?
Starts at 95º and stops at 87.8º
Stage of hypothermia noted by cool, flushed or pale skin; shivering; difficulty in speech and movement; and amnesia.
Mild Hypothermia (89.6º - 95º F)
Stage of hypothermia noted by stupor, shivering replaced with muscular rigidity and loss of voluntary motion; cardiac output drops, pulse and respirations become depressed, pupils dilate, skin may be pale or cyanotic, irregular pulse due to abnormalities in the heart's conduction system, ventricular fibrillation may develop.
Moderate Hypothermia (80.6º - 89.6ºF)
Stage of hypothermia noted by decrease of cerebral blood flow, one third of normal; patient is unresponsive to pain. Cardiac output is greatly depressed, and significant hypotension is noted. Cardiac arrest is likely.
Severe Hypothermia (less than 80.6ºF)