Mean counts of limb MNs in the individual segments of the human spinal cord (13–40 years, 12 cases)
| Segment level | |
|---|---|
| L1 | 806 |
| L2 | 5146 |
| L3 | 12765 |
| L4 | 12069 |
| L5 | 12674 |
| S1 | 10372 |
| S2 | 4216 |
| S3 | 409 |
| Total number | 58457 |
Data are adopted from the study by Tomlinson and Irving (1977).