D3.3.11 (HL)—Blood supply changes
Blood supply changes during exercise redistribute flow so more blood reaches skin for heat removal in human physiology in human physiology.
- Syllabus
- First assessment 2025
- Objective
- D3.3.11
- Level
- HL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper1A
Typical marks1
Common command terms
- Identify
Recent exam appearances
May 2025Paper1A ["HL"] · TZ332[ 1 ]D3.3.11 (HL)—Blood supply changes
Practice this objective
Coverage 2025–2025 · Updated 16 Jul 2026
Concept essentials
- Exercise increases heat production in muscles.
- More blood flow to the skin helps transfer heat to the environment.
- Blood redistribution supports thermoregulation during activity.