Organ of Vision. 



221 



Trochl 



Slitf.t. 



N. OCULOMOTOR., N 

 0. RAH. NASO-CILIAB. 7RJSEM. 1 



298. The Muscles of the Eye, from the outside. 



M. rectus interims, M. rectus externus, 

 M. rectus superior, M. rectus inferior arise 

 in the vicinity of the sheath of the optic 

 nerve, run forwards, and are inserted by 

 tendinous expansions at a distance of from 

 2 to 3 lines from the margin of the cornea 

 into the sclerotica. The M. rectus externus 

 arises by two heads. 



M. obliquus superior s, M. trochlearis is 

 placed at the upper and inner side of the 

 orbit; its tendon passes through a fibro- 

 cartilaginous ring or pulley, Troclilea, 

 which is attached to the trochlear fossa, 

 s. Hamulus trochlearis of the frontal bone, and 

 passing outwards and backwards is inser- 

 ted into the sclerotic coat. 



M. obliquus inferior arises at the inner 

 end of the lower margin of the orbit; it 

 passes outwards, upwards and backwards 

 and is inserted into the sclerotic coat. 



299, The Muscles of 



the Eye, from above. 



