CAIE IGCSE Biology 9.2.9 Importance of the Septum in Separating Questions
Practise explaining how the heart septum prevents mixing of oxygenated and deoxygenated blood.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- identify the septum as the muscular partition separating the left and right sides of the heart
- explain that separation preserves a high oxygen concentration in blood pumped to body tissues
- predict that a septal hole allows mixing and reduces oxygen delivery for respiration, growth or activity
