CAIE IGCSE Biology 9.2.8 Relative Thickness of a the Muscle Questions
Practise relating atrial and ventricular muscle thickness to the pressure and distance over which each chamber pumps.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- identify the left ventricle as having the thickest muscular wall
- explain that it generates high pressure to move blood around the entire body against greater resistance
- explain why atrial walls are thinner than ventricular walls and the right ventricle is thinner than the left
