When the body is too hot, arterioles near the skin surface

  1. move deeper into the skin
  2. dilate so more heat is lost
  3. constrict so less heat is lost
  4. move closer to the surface
Answer

B) dilate so more heat is lost

Vasodilation increases heat loss. O Level Biology · Topic 14 Coordination and Control · 14.5 Temperature control

Biology MCQ · More O Level Biology: Coordination and Control MCQs · Practise