These sensory and motor nerve roots unite to create the 31 spinal nerves, each named for the individual vertebra from which it exits. The spinal nerves further divide into anterior and posterior rami.

Low Grade Glioma of the Optic Nerve. (Left) T1-weighted axial MRI; (Middle) T1-weighted with gadolinium axial MRI ; (Right) Short T1 Inversion Recovery (STIR) coronal MRI. Note the well demarcated ...