Which organ coordinates responses that keep a mammal’s internal body temperature relatively constant?
The brain.
AQA GCSE Biology - Foundation (8461) · 4.5.2.4
Revise AQA GCSE Biology - Foundation (8461) specification point 4.5.2.4, Control of body temperature (biology only), with free active-recall flashcards. Flip through the set or review every question and answer below.
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Which organ coordinates responses that keep a mammal’s internal body temperature relatively constant?
The brain.
How does sweating cool a mammal when its body is too warm?
Sweat glands release sweat, whose evaporation removes heat.
How do arterioles supplying capillaries near the skin surface respond when a mammal is too warm?
They dilate, increasing blood flow near the surface and increasing heat loss.
How does shivering warm a mammal when its body is too cold?
Rapid muscle contractions produce heat.
How do skin-supplying arterioles respond when a mammal is too cold?
They constrict, reducing blood flow near the surface and limiting heat loss.
How do a mammal’s temperature-regulating responses affect departures from its normal internal temperature?
They oppose the departures, helping keep internal temperature relatively constant.