THE NASAL NERVE. 



645 



Long ciliary nerves. As the nasal crosses the optic nerve, it Long ciliary 

 supplies two or more ciliary branches (fig. 228, 7 ) to the eyeball. bl 

 These lie on the inner side of the optic nerve, and join the ciliary 

 branches of the lenticular ganglion. 



The infratrochlear branch ( 2 ) arises as the nasal nerve is about infra- 

 to leave the cavity, and is directed forwards below the pulley of the branch!" 



FIG. 228. SECOND VIEW OF THE ORBIT (ILLUSTRATIONS OF DISSECTIONS). 



Muscles : 



A. Superior oblique. 



B. Levator palpebrae and upper 

 rectus thrown back together. 



c. External rectus. 



D. Fore part of upper rectus. 



F. Lachrymal gland. 



Nerves : 



1. Nasal. 



2. Its infratrochlear branch. 



3. Lenticular ganglion : 4, its 

 short root ; 5, its long root (too 

 large). 



6. Branch of third to inferior 

 oblique muscle. 



7. Ciliary branches of the nasal 

 nerve. 



8. Upper branch of the third. 



9. Sixth nerve. 



10. Third nerve, outside the 

 orbit. 



superior oblique muscle, to end in the upper eyelid, the conjunctiva, 

 and the side of the nose. Before this branch leaves the orbit it 

 receives an offset of communication from the supratrochlear nerve. 



In the nose (fig. 239, 6 , p. 675). While in the nasal cavity the nerve Nasal ner\ 

 furnishes branches to the lining membrane of the septum and outer 

 wall ; and these will be subsequently referred to with the nerves of 

 the nose (p. 677). 



