466 



ARTERIES. 



the anterior ethmoidal cells and frontal sinuses, and entering the cranium, 

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

 a nasal branch, which descends into the nose, through an aperture in the crib- 

 riform 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 Right Half of the Cerebellum and Pons 



have been removed. 



the eyelids near their free margin, forming a superior and an inferior arch, 

 which lie between the Orbicularis muscle and tarsal cartilages ; the superior 



