SUPERIOR LARYNGEAL NERVE. 



451 



to the pharyngeal plexus, and 

 then descends to supply the in- 

 ferior constrictor and crico-thy- 

 roid muscles and thyroid gland. 

 This branch communicates infe- 

 riorly with the recurrent laryn- 

 geal and sympathetic nerve. 



Mr. Hilton of Guy's Hospi- 

 tal, concludes from his dissec- 

 tion s-f- that the superior laryn- 

 geal nerve is the nerve of sensa- 

 tion to the larynx, being distri- 

 buted solely (with the exception 

 of its external laryngeal branch 

 and a twig to the arytenoideus) 

 to the mucous membrane. If 

 this fact be taken in connection 

 with the observations of Sir 

 Astley Cooper, and the dissec- 

 tions of the origin of the nerve 

 by Mr. Edward Cock, we shall 

 have ample evidence, both in 

 the ganglionic origin of the 



* Origin and distribution of the 

 eighth pair of nerves. 1. 3, 4. The 

 medulla oblongata. 1 . Is the cor- 

 pus pyramidale of one side. 3. 

 The corpus olivare. 4. The corpus 

 restiforme. 2. The pons Varolii. 

 5. The facial nerve 6. The ori- 

 gin of the glosso-pharyngeal nerve. 

 7. The ganglion of Andersch. 8. 

 The trunk of the nerve. Q. The 

 spinal accessory nerve. 10. The 

 ganglion of the pneumogastric 

 nerve. 11. Its plexiform ganglion. 

 12. Its trunk. 13. Its pharyn- 

 geal branch forming the pharyn- 

 geal plexus (14), assisted by a 

 branch from the glosso-pharyn- 

 geal (8), and one from the superior 

 laryngeal nerve (15). 16. Cardiac 

 branches. 17. Recurrent laryn- 

 geal branch. 18 Anterior pulmo- 

 nary branches. 1Q. Posterior pul- 

 monary branches. 20. (Esopha- 

 geal plexus. 21. Gastric branches. 

 22. Origin of the spinal accessory 

 nerve. 23. Its branches distri- 

 buted to the sterno-mastoid mus- 

 cle. 24 Its branches to the tra- 

 pezius muscle. 



f Guy's Hospital Reports, vol. ii. 



Fig. 147-* 



