Descripción o resumen: Prelims Unit 1. Organisation of the human body Unit 2. The nutrition function I: feeding and nutrition Unit 3. The nutrition function II: apparatus involved in nutrition Unit 4. The interaction function I: nervous and endocrine coordination Unit 5. The interaction function II: receptors and effectors Unit 6. The reproductive function: sexuality and reproduction Unit 7. Health and disease Unit 8. Land relief Unit 9. Internal energy of the Earth Anexos Appendices Teacher 's guide. Unit 1 Teacher 's guide. Unit 2 Teacher 's guide. Unit 3 Teacher 's guide. Unit 4 Teacher 's guide. Unit 5 Teacher 's guide. Unit 6 Teacher 's guide. Unit 7 Teacher 's guide. Unit 8 Teacher 's guide. Unit 9