Cross-Section of the Spinal Cord, Showing the Dorsal (Posterior) and Ventral (Anterior) Roots

(From Watcha MR, White PF. Postoperative nausea and vomiting. Its etiology, treatment, and prevention. Anesthesiology. 1992;77:162-184, with permission.)

The cell body of peripheral sensory nerves is in the dorsal root ganglion. The cell body of motor nerves is in the anterior horn.