90 



PLATE XLVIIL NATURAL SIZE. 



MUSCLES 



A Tentorium cerebelli. 



B Free edge of the tentorium passing 



forward to be attached to the anterior 



clinoid process. 

 C Anterior cut extremity of the falx 



cerebri. 

 D Posterior cut edge of the falx cerebri, 



at its junction with the tentorium. 

 E Placed over the upper border of the 



dorsum sellse. 

 F Anterior clinoid process. 

 G Olivary process. 



H Levator palpebrae. 



I Superior rectus. 



K Superior oblique. 



L Tendon of superior oblique. 



M Sclerotic coat of eyeball. 



N Lachrymal gland. 



Pulley of superior oblique. 



P External rectus. 



R Internal rectus. 



S Placed in frontal sinus just in front of 



the infundibulum. 

 T Orbital plate of frontal bone. 



VESSELS 



a Internal carotid. 

 b Middle cerebral. 

 c Anterior cerebral. 

 d Anterior communicating. 

 a Posterior communicating. 

 / Vertebral. 

 <7 Basilar. 



h Posterior cerebral. 

 i Posterior superior cerebellar. 

 /; Posterior choroid. 

 I Anterior cerebellar. 

 TO Leash of arteries going to posterior per- 

 forated space. 



1 n Inferior cerebellar. 

 o Ophthalmic. 

 p Supra-orbital. 

 r Lachrymal. 

 s Posterior ethmoidal. 

 t Anterior ethmoidal. 

 v Frontal. 

 x Long ciliary. 

 y Short ciliary. 

 z Lateral sinus. 

 * Superior longitudinal sinus, 

 t Inferior longitudinal sinus. 



NERVES 



1 , Optic tract. 



2 Optic commissure. 



3 Optic nerve. 



4 Third nerve. 



5 Sixth nerve. 



6 Frontal branch of ophthalmic division 



of fifth. 



7 Supra-orbital. 



8 Supra-trochlear. 



9 Fourth nerve. 



10 Nasal branch of the first division of 



fifth. 



11 Infra-trochlear branch of the nasal. 



12 Long ciliary branch of the nasal. 



18 Ciliary branches from the lenticular 



ganglion. 

 14 Lachrymal nerve. 



One of the small transverse branches coming off from the basilar usually accom- 

 panies the auditory nerve into its internal auditory meatus, and is called the auditory 

 artery. 



