section 1. The characteristics of living matter -- 1. Introduction -- 2. The chemical level of organization -- 3. The cellular level of organization -- 4. Tissues, organs, systems and homeostasis -- section 2. Control and co-ordination -- 5. The nervous system -- 6. The ear -- 7. The eye -- 8. Endocrine glands -- section 3. Posture and movement -- 9. Development and types of bone -- 10. Bones of the head and trunk -- 11. Bones of the limbs -- 12. Joints or articulations -- 13. Muscle -- section 4. Internal transport -- 14. The blood -- 15. The heart and blood vessels -- 16. The circulation -- 17. The lymphatic system-- 18. The respiratory system -- section 5. Nutrition and elimination -- 19. The digestive system -- 20. The liver, biliary system and pancreas -- 21. Nutrition -- 22. Digestion and metabolism -- 23. Fluid balance and the urinary system -- section 6. Protection and reproduction -- 24. The skin -- 25. Non-specific resistance and the immune system -- 16. The reproductive system.