926 



NEUROLOGY 



Superficial Branches of the Cervical Plexus (Fig. 805). The Smaller Occipital 

 Nerve (n. occipitalis minor; small occipital nerve} arises from the second cervical 

 nerve, sometimes also from the third; it curves around and ascends along the 

 posterior border of the Sternocleidomastoideus. Near the cranium it perforates 

 the deep fascia, and is continued upward along the side of the head behind the 

 auricula, supplying the skin and communicating with the greater occipital, the 

 great auricular, and the posterior auricular branch of the facial. The smaller 

 occipital varies in size, and is sometimes duplicated. 



R.C.A. WIN. 



-* I^K.H, MAJ. 



COMMUNICATING TO 

 HYPOGUOSSAL 



SYMPATHETIC 



LONGUS COLL. & 

 RECTUS ANT. MAJOR 



LEVATOR ANGULI SCAR 



& SCALENUS MEDIUS 



TRAPEZIUS 



TO GENIOHYOID 

 ^ 

 TOTHYROHYOID 



SUBMANDIBULAR 

 BR. OF FACIAL 



FROM SYMPATHETIC 



FIG. 804. Plan of the cervical plexus. (Gerrish.) 



It gives off an auricular branch, which supplies the skin of the upper and back 

 part of the auricula, communicating with the mastoid branch of the great auricular. 

 This branch is occasionally derived from the greater occipital nerve. 



The Great Auricular Nerve (n. auricularis magnus] is the largest of the ascending 

 branches. It arises from the second and third cervical nerves, winds around the 

 posterior border of the Sternocleidomastoideus, and, after perforating the deep 



