D3.3.5—Thermoregulation
Thermoregulation maintains core body temperature by detecting changes and activating heat loss or heat conservation responses in human physiology in human physiology.
- Syllabus
- First assessment 2025
- Objective
- D3.3.5
- Level
- SL
Exam analysis
Chance of appearing3%of analysed past papers
Latest appearanceMay 2017
Most common paperPaper1
Typical marks1–8
Common command terms
- Describe
- Explain
- Identify
- Outline
Recent exam appearances
May 2017Paper1 ["SL"] · TZ230[ 1 ]D3.3.5—Thermoregulation
November 2015Paper1 ["SL"] · TZ027[ 1 ]D3.3.5—Thermoregulation
May 2013Paper2 ["SL"] · TZ27(c)[ 8 ]D3.3.5—Thermoregulation
May 2012Paper2 ["SL"] · TZ17(b)[ 6 ]D3.3.5—Thermoregulation
Practice this objective
Coverage 2012–2017 · Updated 16 Jul 2026
Concept essentials
- The hypothalamus coordinates body temperature control.
- Sweating and vasodilation increase heat loss when body temperature is high.
- Shivering and vasoconstriction help conserve or generate heat when body temperature is low.