736 



THE NEKVOUS SYSTEM. 



1. Visceral branches. 4. Pudendal nerve. 



2. Posterior cutaneous nerve of the thigh. 5. Muscular branches. 



3. Perforating cutaneous nerve. 6. Ano-coccygeal nerve. 



All the nerves, except the visceral branches, are distributed to the perineum. 



LATERAL CUTANEOUS 

 NERVE OF THE THKH 



WHITE RAMUS 

 84 



SCIATIC 

 FIG. 631. NERVES OF THE LUMBO-SACRAL PLEXUS. 



Only two, the posterior cutaneous nerve of the thigh and the perforating cutaneous 

 nerve, send branches to the lower limb. 



Visceral Branches. Like the other spinal nerves, the fourth and fifth sacra 

 and coccygeal nerves are provided with fine gray rami communicantes fronc 

 the sacral sympathetic trunk, which join them after a short course on the front o 



