Page 84 - ASOP ROT Study Guide

Nerves carrying sensory information are grouped at the back of the spinal cord and are known
collectively as the dorsal columns. Nerves carrying impulses from the brain to the muscles are
grouped at the front and are known as anterior columns.
If you look at a cross section of the spinal cord you will see that there is a butterfly-shaped grey
central part - the grey matter - surrounded by a whiter area - the white matter.

http://multiple-sclerosis-research.blogspot.com/2013/09/imaging-spinal-cord.html

17 . 2 Nerve Roots
Nerve roots are the connection between the spinal cord and the spinal nerves which supply the
muscles. There are thirty one pairs of spinal nerves connected to the spinal cord. Once they
emerge from the spinal region they form a bundle of fibers are called peripheral nerves.

http://higheredbcs.wiley.com/legacy/college/tortora/047056510
1/hearthis_ill/pap13e_ch13_illustr_audio_mp3_am/simulations/
hear/spinal_cord_and_nerves.html