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
- HL
Exam analysis
Chance of appearing4%of analysed past papers
Latest appearanceMay 2023
Most common paperPaper2
Typical marks1–8
Common command terms
- Describe
- Explain
- Identify
- Outline
Recent exam appearances
May 2023Paper2 ["HL"] · TZ14(b)(ii)[ 2 ]D3.3.5—Thermoregulation
May 2022Paper2 ["HL"] · TZ11(a)[ 1 ]D3.3.5—Thermoregulation
May 2014Paper2 ["HL"] · TZ21(f)[ 2 ]D3.3.5—Thermoregulation
May 2013Paper2 ["HL"] · TZ26(c)[ 8 ]D3.3.5—Thermoregulation
Practice this objective
Coverage 2013–2023 · 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.