Open and closed circulation

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• 9 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. Transport systems and the heart
2. Blood, immunity and blood groups
3. Why animals need a transport system
4. Open and closed circulation
5. Single circulation in fish
6. Hearts of amphibians and reptiles
7. Structure of the mammalian heart
8. The cardiac cycle and the heartbeat
9. Arteries, veins and capillaries
10. Double circulation in mammals
11. Plasma and red blood cells
12. White cells and immunity
13. The lymphatic system and blood clotting
14. ABO, rhesus and blood donation