CHAPTER 12 Spinal Cord and Spinal Nerves

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rootlets

Intervertebralforamen

Dorsalrootganglion

Spinalnerve

Transverseprocess ofvertebra(cut)

FIGURE 12.15 Spinal Nerves

( a ) Typical thoracic spinal nerves have dorsal and ventral roots, as well as dorsal, ventral, and communicating rami. Communicating rami connect to thesympathetic chain (see chapter 16). ( b ) Photograph of four dorsal roots in place along the vertebral column.