Unit I: The body as a whole -- 1. organization of the human body -- 2. Chemistry, matter, and life -- 3. Cells and their functions -- 4. Tissues, glands, and membranes -- Unit II: Disease and the first line of defense -- 5. Disease and disease-producing organisms -- 6. The integumentary system -- Unit III: Movement and support -- 7. The skeletal system: bones and joints -- 8. The muscular system -- Unit IV: Coordination and control -- 9. The nervous system: the spinal cord and spinal nerves -- 10. The nervous system: the brain and cranial nerves -- 11. The sensory system -- 12. The endocrine system: glands and hormones -- Unit V: Circulation and body defense -- 13. The blood -- 14. The heart and heart disease -- 15. Blood vessels and blood circulation -- 16. The lymphatic system and lymphoid tissue -- 17. Immunity -- Unit VI: Energy: supply and use -- 18. The respiratory system -- 19. The digestive system -- 20. Metabolism, nutrition, and body temperature -- 21. The urinary system -- 22. Body fluids -- Unit VII: Perpetuation of life -- 23. The male and female reproductive systems -- 24. Development and birth -- 25. Heredity and heredity disease.