'52 TheJnatoniyofaUOKSiE. Chap. V. 



Fig. 4. Reprefents the Eye taken out of the Head. 

 ■A. The Optic k Nerve cut off. 

 B. The Origin of the Mujcles. 



CC. Their feveral Terminations into the Coats of the Eye. 

 ^D. The common Coat of the Eye^ called the Adnata, or Con- 

 jundiva. 



E. The Cornea, or horney Coat. 



F. The Pupilla, or Apple of the Eye. 



CHAP. V, 



Of the Mufcles. 



§ I. Of the Mhfcles of the Eye-lids and Eye. 



Three Pair of "T* H E Eyelids have three pair of Muf- 

 Mufcles belonging A cles, one pair to open them, and two 

 to the Eye-lids. ^q fl^^t them. 



That which openeth the Eyelids is called 

 Recius or Jperiens^ from its Office. It fpringeth with a 

 Jlender, but fieftiy Beginning, from the fame Place as the 

 Elevator oi the Eye doth, to wit, at the Hole through which 

 the Optick Nerve pafles into the Orbit, and -holds the fame 

 Courfe with it, till at lall parting from it with a pretty broad 

 but thin Tendon, it is inferted into the Griftle at the Edge 

 of the upper Eyelid, where it ferves to open the Eyelid by 

 lifting it up. 



The other two Mufcles of the Eyelids are call'd Shutters j 

 and olheiwiie femicircular, becaufe each of them runs the 

 Length of the Eyeli'd ; they are feated between the Mem- 

 brana carnofa^ and the inner fmooth Skin that lines the Eye- 

 lids. That which draweth down the upper Lid, is larger 

 than the Mufcle which moveih the lower Lid to fliut it. 



The frontal Mufcles are alfo thought to contribute fome- 

 thing to the Motion of the Eyelids, as they arife from the 

 Skull, near the coronal Suture, and are inferted in the Eye- 

 brows.; for by their Action they contradl the Skin of the 

 Forehead, by which Means the upper Eyelid is fometimes 

 drawn a little upward. 



7he Eyes hanje ^^^^ ^^^^ ^^^^ ^^^^" P^'"^ °^ Mufcles, of 



Sewn pair of which four are ftrcight, two oblique or flant- 

 Mufdes belong, ing, and the other pair circular, or round. 

 ing to them. The ftreiglu ferve to move the Eyes up- 

 wards 



