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GCSE Biology > Temperature regulation > Flashcards

Temperature regulation Flashcards

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1
Q

body temperature is regulated by what part of the brain?

A

hypothalamus

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2
Q

what does the hypothalamus do?

A
  • monitors the blood temperature

- recieves impulses from temperature receptors in the skin

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3
Q

what temperature is it?

A

37 degrees

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4
Q

Cooling mechanism 1-

A

SWEATING - evaporation of water draws heat from the skin

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5
Q

Cooling mechanism 2-

A

VASODILATION OF ARTERIOLES- more blood is channeled to skin to increase heat loss by radiation

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6
Q

Cooling mechanism 3-

A

hairs lie flat on body

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7
Q

Warming mechanism 1-

A

SHIVERING- muscle contraction releases heat

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8
Q

Warming mechanism 2-

A

VASCONSTRICTION- blood is diverted away from skin

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9
Q

Warming mechanism 3-

A

hairs raised to trap a layer of air for insulation

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GCSE Biology (15 decks)

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