chapter 17 Flashcards

1
Q
A
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2
Q

gaining heat

A

eating
enviorment

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3
Q

factors leading to heat loss

A

conduction convection radiation evaporation

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4
Q

temp regulatory center

A

in the hypothalmus
recptors
temp to hifh incereases rate of heat loss
to low produces metabolic heat

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5
Q

frostbite

A

crystllization of the fluids in the skin

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6
Q

cold acclimatiozation

A

increases BMR
decreases Periphreal circulation
increasesd body fat

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7
Q

heat loss

A

sweatin gis the only means of heat loss

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8
Q

hot and dry

A

Cooling is brought about by sweat

Slow-moving blood in/close to the skin helps transfer heat to evaporative surfaces and enhances cooling

Exercise can impose severe loads on cardiovascular system

Dehydration is possible

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9
Q

Hot and Humid

A

Hot and humid:
Evaporative cooling is impaired
Metabolic heat accumulates and raises body temperature
Problems of exercising in a hot, dry environment are aggravated

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10
Q

human limitations on heat

A

Heat stress
Sum of the metabolic and environmental heat loads
Heat strain
Bodily effect of heat stress
Muscle (heat) cramps
Acute, painful, involuntary muscle contraction due to dehydration, electrolyte imbalance, neuromuscular fatigue
Heat syncope
Dizziness associated with high environmental temperatures
Exertional hyperthermia
Core temperature greater than 104 degrees F during physical activity
Exertional heat exhaustion
Fatigue due to the rate of heat loss cannot keep up with heat production of the body during heat
Exertional heatstroke
Potential fatal disorder via core temperature greater than 104 degrees F; loss of consciousness follow exertion.

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11
Q
A

children and old people less tolerance for the heat

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12
Q

females

A

hot and humid

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13
Q

males

A

hot and dry

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14
Q
A
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