OPHTHALMIC ARTERY. 



55 



branches to the lining membrane of the septum narium and outer wall ; 

 these will be subsequently referred to with the nose. 



Fig. 11. 



Muscles : 



SECOND VIEW OF THE ORBIT (Illustrations of Dissections). 



Nerve # : 



a. Superior oblique. 



b. Levator palpebne and upper rectus thrown 



back together. 



c. External rectus. 



d. Fore part of upper rectus. 

 /. Lachrymal gland. 



1. Nasal nerve beginning outside of the orbit. 



2 Its infra-trochlear branch. 



3. Lenticular ganglion ; 



4. Its branch to the third nerve ; 



o. Its branch to the nasal nerve (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. 



Termination of the nasal nerve (fig. 9). After the nerve becomes 

 cutaneous on the side of the nose, as seen in the dissection of the facial 

 nerve (p. 47), it descends beneath the compressor naris muscle, and ends 

 in the integuments of the wing and tip of the nose. 



The OPHTHALMIC or LENTICULAR GANGLION of the sympathetic nerve 

 (h'g. 11, 3 ) is a small round body, of the size of a pin's head, and of a 

 slight red color. It is placed at the back of the orbit between the optic 

 nerve and the external rectus, and commonly on the outer side of, and 

 close to the ophthalmic artery. By its posterior part the ganglion has 

 branches of communication with other nerves (its roots) ; and from the 

 anterior part proceed the ciliary nerves to the eyeball. The ganglion 

 communicates with sensory, motory, and sympathetic nerves. 



The offsets of communication are three in number. One, the long 

 root ( 5 ), is the branch of the nasal nerve before noticed, which joins the 



