Posterior horn of the spinal cord:

Posterior horn of the spinal cord.

one of the divisions of the grey matter of the spinal cord, the posterior horn contains interneurons that make connections within the spinal cord as well as neurons that enter ascending sensory pathways. It contains the substantia gelatinosa.

Read more: Know your brain - Spinal cord

Watch this 2-Minute Neuroscience video to learn more about the spinal cord.