| Cortical motor areas |
| Basal ganglia |
| Cerebellum |
|
|
|
| Descending |
||
| cortical
motor |
||
| paths |
||
|
|
|
| Descending |
||
| brain stem |
||
| paths |
||
|
|
|
| Spinal cord: |
||
| Intermediate zone |
||
| Ventral horn |
||
| Muscle |