IB Biology SL B3.2.3 Artery adaptations
IB Biology SL B3.2.3 Artery adaptations
Practise explaining artery adaptations, especially elastic walls, thick muscle and narrow lumen, in relation to pressure and continuous blood flow.
How this is tested
- explain how elastic fibres stretch and recoil to smooth pressure changes in arteries
- link thick muscular walls with the need to withstand high blood pressure
- identify artery features in tables or diagrams and reject valve-based explanations