4r,r, 



A IITKKIKS. 



tin: anterior ethmoiclal cells and frontal sinu.-es, and entering the cranium, 

 divides into a meninjjral branch, which supplies the, adjacent dura mater, and 

 :, n;i-;il branch, which des< 'ends into the nose, tlirough an aperture in the crib- 

 ril'oi-ni plate. 



The palpebral arteries, two in number, superior and inferior, arise from the 

 ophthalmic, opposite the pulley of the Superior Oblique muscle; they encircle 



Fig. 281. The Arteries of the Base of the Brain. The Ki.Jit Half of the Cerebellum and Tons 



IMTH removed. 



the eyelids near their free mar-in, forming a superior and an interior arch, 

 \vhich lie In'tween the Orbicularis muscle and tarsal cartilages; the 



