Thermoregulation Flashcards

1
Q

Poikliothermic

A

Dependent on ambient environmental temperature for function
In active in cold
Seek shelter in heat
Benefits are slower metabolic rate in extreme conditions

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2
Q

Homeothermic

A

Function in a wide range of temperatures, but have high metabolic cost

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3
Q

What can effect normal body temperatures?

A

age: reserve capacity
sex: hormones
breed: adaptions
Time of day: Hot/cold day
Behavior: exercise
Hydration: Ability to use evaporative cooling
Reproductive status: Lactation can increase metabolic rate and hormones
Site of measurement: different heat gradients through out the body

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4
Q

Define frostbite

A

Circulation to the peripheral tissue shuts down to retain body temperature.

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5
Q

Describe cooling adaptions of the brain

A

close to capillary beds (vascular plexus) to nasal cavity heat exchange = large amount of blood flow for heat exchange

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6
Q

What happens during panting

A

Air is moved through a moist environment allowing evaporative cooling to occur (no gas is exchanged)

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7
Q

What organ produces the most heat?

A

The brain, as it consumes the most glucose (pure energy)

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