| Select | | View | Download | | 18.1 The human skeleton | | |
| 18.2 Joints and ligaments | | |
| 18.3 Skeletal muscles | | |
| 18.4 How movement occurs | | |
| 18.5 Initiation of muscle contraction by nerve impulses | | |
| 18.1 The human skeleton (Bilingual) | | |
| 18.2 Joints and ligaments (Bilingual) | | |
| 18.3 Skeletal muscles (Bilingual) | | |
| 18.4 How movement occurs (Bilingual) | | |
| 18.5 Initiation of muscle contraction by nerve impulses (Bilingual) | | |