Temperature Control (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the actual range of normal human core body temperature?
What is the actual range of normal human core body temperature?
36.8 ± 0.5°C
Which feature defines endotherms?
Which feature defines endotherms?
Generate heat within body tissues
What is an advantage of ectotherms over endotherms?
What is an advantage of ectotherms over endotherms?
Require less food due to lower metabolism
Which is the primary method of heat loss from the human body?
Which is the primary method of heat loss from the human body?
Radiation
During vasodilation, which structures dilate to increase blood flow to skin capillaries?
During vasodilation, which structures dilate to increase blood flow to skin capillaries?
Arterioles
How does sweating cool the body?
How does sweating cool the body?
Evaporation extracts heat from skin
What generates the heat during shivering?
What generates the heat during shivering?
Metabolic reactions in muscle
Where is the temperature control centre located in endotherms?
Where is the temperature control centre located in endotherms?
Hypothalamus
During vasoconstriction, where is blood diverted to reduce heat loss?
During vasoconstriction, where is blood diverted to reduce heat loss?
Shunt vessels deeper in skin
How does O₂ consumption change in mice as environmental temp increases from 5°C to 30°C?
How does O₂ consumption change in mice as environmental temp increases from 5°C to 30°C?
Decreases