Inferior to the lumbar enlargement is the conus medullaris.
2.
The lumbar enlargement, located between L1 and S3 spinal segments, handles sensory input and motor output coming from and going to the legs.
3.
This is true of the ?-MNs innervating the upper and lower limbs : these ?-MNs form large cell columns that contribute to the cervical and lumbar enlargements of the spinal cord.
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