IB Biology SL 3.3.6 Thermoregulation Mechanisms
Practise linking vasodilation, sweating, shivering and metabolic heat to human responses in hot and cold conditions.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Explain how vasodilation and sweating increase heat loss when body temperature rises.
- Explain shivering and metabolic heat production during cold conditions.
D3.3.6—Thermoregulation mechanisms question 1
These results were obtained by measuring the body temperature of people exercising on a hot and humid day.
What mechanism could result in the changes seen during rest periods?
A
Shivering
B
Uncoupled respiration in brown adipose tissue
C
Vasodilation in the skin
D
Hair erection
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