| Select | | View | Download | | 9.1 The need for a transport system | | |
| 9.2 The blood | | |
| 9.3 Blood vessels | | |
| 9.4 The heart | | |
| 9.5 Blood circulation | | |
| 9.6 Material exchange between the blood and body cells | | |
| 9.7 Lymphatic system | | |
| 9.1 The need for a transport system (Bilingual) | | |
| 9.2 The blood (Bilingual) | | |
| 9.3 Blood vessels (Bilingual) | | |
| 9.4 The heart (Bilingual) | | |
| 9.5 Blood circulation (Bilingual) | | |
| 9.6 Material exchange between the blood and body cells (Bilingual) | | |
| 9.7 Lymphatic system (Bilingual) | | |