CAIE IGCSE Biology EXTENDED 9.2.7 Atrioventricular & semilunar valves
CAIE IGCSE Biology EXTENDED 9.2.7 Atrioventricular & semilunar valves
Practise recognising atrioventricular and semilunar valves in heart diagrams and linking each valve to one-way blood flow.
How this is tested
- identify atrioventricular or semilunar valves on labelled heart sections
- state how a valve prevents backflow and keeps blood moving one way
- complete tables showing valve opening and closing during a heartbeat