Control of Body Temperature (AQA GCSE Biology): Flashcards
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Practise the cards
13 cards from this deck
Location of thermoregulatory centre
Location of thermoregulatory centre
Brain
Function of thermoregulatory centre
Function of thermoregulatory centre
Monitors and controls body temperature
Normal human body temperature
Normal human body temperature
37.5°C
Vasodilation meaning
Vasodilation meaning
More blood flows closer to skin surface
Effect of vasodilation
Effect of vasodilation
Increased energy transfer from body
Vasoconstriction meaning
Vasoconstriction meaning
Blood doesn't flow so close to surface
Effect of vasoconstriction
Effect of vasoconstriction
Less heat lost from body
Body's response when temperature too high
Body's response when temperature too high
Sweat produced, vasodilation occurs
How sweat cools the body
How sweat cools the body
Evaporates from skin, transfers energy away
Body's response when temperature too low
Body's response when temperature too low
Sweating stops, shivering, hairs stand up, vasoconstriction
What is shivering?
What is shivering?
Skeletal muscles contract rapidly
Purpose of shivering
Purpose of shivering
Generate heat from respiration
Why hairs stand on end when cold
Why hairs stand on end when cold
Creates insulating layer, traps warm air