Information is relayed to the spinal cord or the brain by

Sensory neurons/cells located in the dorsal root ganglion.

Explanation: Sensory information from the skin, skeletal muscle and joints are relayed to the spinal cord and brain by sensory neurons/cells in dorsal roots, the dorsal roots enter the spinal cord in small bundles called dorsal rootlets. The cell bodies for these sensory neurons are packed closely together to form a structure called the dorsal root ganglion, which is located alongside the spinal cord.

the most reliable source of information.is wikipedia

1/0.14nm = 10^10/1.4 a lot