98 



PLATE XL1X. 



MUSCLES AND FASCIA 



A Cut edge of tentorium. 



B Cut edge of falx cerebri. 



C Falx cerebelli. 



D Dura mater bridging over the fifth 



nerve and entering into the roof of 



Meckel's cave. 



E Placed over the dorsum selte. 

 G Anterior extremity of the falx cerebri 



attached to crista galli. 

 H Superior oblique-. 

 H' Tendon of superior oblique. 

 I Internal rectus. 

 K Inferior rectus. 

 L External rectus. 

 M Superior rectus. 



N Levator palpebrse. 



Lachrymal gland. 



P Inferior oblique. 



R Inner surface of the temporal muscle. 



S External pterygoid. 



T Top of the interarticular cartilage of 

 the temporo-maxillary joint. 



V Top of condyle of the lower jaw. 



W Anterior clinoid process. 



X Placed by the foramen ovale. 



Y Placed by the foramen rotundum. 



Z The roof of the optic foramen turned 

 inwards with the origins of the 

 levator palpebne and superior rectus. 



VESSELS 



a Internal carotid. 



b Internal carotid in cavernous sinus. 



c Ophthalmic artery. 



d Lachrymal artery. 



e Recurrent branch of lachrymal to middle 



/ Ciliary arteries. [fossa 



g Ophthalmic artery. 



h Anterior ethmoidal. 



i Infra-orbital branch of internal max- 

 illary. 



k Deep temporal branch of internal 

 maxillary. 



I Middle meningeal. 



in Its anterior division. 



n Its posterior division. 



o Its petrosal branch. 



p Ganglionic branch of internal carotid. 



r Vertebrals. 



s Posterior cerebellar. 



t Commencement of superior longitudinal 



sinus. 



u End of superior longitudinal sinus. 

 v End of straight sinus. 

 w Lateral sinus laid open. 



NERVES 



1 Infundibulum leading through dura 



mater to pituitary body. 



2 Optic nerve. 



3 Third nerve. 



4 Upper division of third supplying 



levator palpebrse and superior rectus. 

 6 Nerve to the inferior oblique from in- 

 ferior division of third nerve. 



6 Branch of third to inferior rectus. 



7 Fourth nerve. 



8 Sixth nerve 



9 Fifth nerve just before passing over the 



superior border of the petrosal bone. 



10 Gasserian ganglion. 



11 Third division of fifth. 



12 Second division of fifth. 



13 First or ophthalmic division of fifth. 



14 Frontal and nasal branches of first 



division of fifth cut (left side). 



15 Frontal branch of ophthalmic cut 



(right side). 



1C Nasal branch of ophthalmic. 

 17 Lachrymal branch of ophthalmic. 



18 Lenticular ganglion, entering the back 



of which is the ganglionic branch of 

 the nasal. 



19 Long ciliary branch of nasal. 



20 Infra- trochlear branch of nasal. 



21 Ciliary branches of the lenticular 



ganglion. 



22 Deep temporal branches of third 



division of fifth. 



23 Masseteric branch of same. 



24 Pterygoid and buccal branches of same. 



25 Great superficial petrosal. 



26 Lesser superficial petrosaL 



27 External petrosal. 



28 Seventh or portio dura. 



29 Pars intermedia. 



80 Auditory or portio mollis. 



31 Glosso-pharyngeal. 



32 Vagus. 



38 Spinal portion of spinal accessory. 



84 Hypoglossal. 



85 Infra-orbital from second division of 



fifth. 



