Thermoregulation (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is thermoregulation?
What is thermoregulation?
Maintaining stable internal temperature
What is the normal human body temperature that thermoregulation maintains?
What is the normal human body temperature that thermoregulation maintains?
Where is the thermoregulatory centre located?
Where is the thermoregulatory centre located?
Hypothalamus in the brain
What does the hypothalamus monitor to control body temperature?
What does the hypothalamus monitor to control body temperature?
Temperature of the blood
What is shivering?
What is shivering?
Involuntary contraction of muscles
How does shivering generate heat?
How does shivering generate heat?
Energy from respiration released as heat
What is vasoconstriction?
What is vasoconstriction?
Narrowing of blood vessels near skin
What is the purpose of vasoconstriction?
What is the purpose of vasoconstriction?
Conserves heat by reducing heat loss
What is vasodilation?
What is vasodilation?
Widening of blood vessels near skin
When does vasodilation occur?
When does vasodilation occur?
When body temperature rises above normal
What happens to enzymes when body temperature falls below ?
What happens to enzymes when body temperature falls below ?
Enzymes slow down
What type of mechanism is thermoregulation?
What type of mechanism is thermoregulation?
Negative feedback mechanism