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CRANIAL GANGLIA. 



sympathetic filaments, which accompany the ramifications of the 

 two anterior cerebral arteries. These filaments are derived from 

 the carotid plexus at each side ; and through their intervention, the 

 ganglion of Ribes is brought into connexion with the carotid 

 plexus, and with the other ganglia of the sympathetic. This gan- 

 glion, though of very small size, is interesting, as being the superior 

 point of union between the sympathetic chains of opposite sides of 

 the body. 



2. The CILIARY GANGLION (lenticular) is a small quandrangular and 

 flattened ganglion situated within the orbit, between the optic nerve 

 and the external rectus muscle; it is in close contact with the optic 

 nerve, and is surrounded by a quantity of fat, which renders its dis- 

 section somewhat difficult. 



Its branches of distribution are the ciliary, which arise from its 



* The cranial ganglia of the sympathetic nerve. 1. The ganglion of Ribes. 2. The 

 filament by which, it communicates with the carotid plexus (3). 4. The ciliary or len- 

 ticular ganglion, giving off ciliary branches for the supply of the globe of the eye. 

 5. Part of the inferior division of the third nerve, receiving a short thick branch from 

 the ganglion. 6. Part of the nasal nerve, receiving a longer branch from the ganglion. 

 7. A slender filament sent directly backwards from the ganglion to the sympathetic 

 branches in the cavernous sinus. 8. Part of the sixth nerve in the cavernous sinus, 

 receiving two branches from the carotid plexus. 9. Mcckel's ganglion (spheno-pala- 

 tine). 10. Its ascending branches, communicating with the superior maxillary nerve. 

 11. Its descending branches, the posterior palatine. 12. Its anterior branches, spheno- 

 palatine or nasal. 4$r The naso-palatinc branch, one of the nasal branches. * The 

 swelling which Cloquet imagines to be a ganglion. 14. The posterior branch of the 

 ganglion, the Vidian nerve. 15. Its carotid branch communicating with the carotid 

 plexus. 16. Its pctrosal branch, joining the angular bend of the facial nerve. 17. The 

 facial nerve. 18. The chorda tympani nerve, which descends to join the gustatory 

 nerve. l$t The gustatory nerve. 20. The submaxillary ganglion, receiving the chorda 

 tympani nerve from the gustatory. 21. The superior cervical ganglion of the sym- 

 pathetic. 



