THE BRANCHES OF THE ARCH OF THE AORTA 257 



temporal fossa and cheek, a branch back through the sphenoidal 

 fissure to join the middle meningeal, and several to the con- 

 junctiva and upper lid to join other palpebral vessels. 



(6) The supraorbital, through the notch, joining the temporal 

 and facial branches. 



FIG. 41 



Nasal. Palpebral. 



Supra-orbital. 



Anterior ethmoidal. 



Posterior ethmoidal. 



Muscular. 



Temporal branches 

 of lachrymal. 



centralis retinas. 

 Lachrymal. 



Ophthalmic. 



Internal carotid. 



The ophthalmic artery and its branches, the roof of the orbit having been removed. 



(c) The ethmoidal branches, posterior and anterior, run 

 through the ethmoidal canals to the ethmoidal cells. The former 

 supplies also the roof of the nose; the latter runs with the nasal 

 nerve, and divides into a meningeal and a nasal branch. 



(d) The palpebral branches, superior and inferior, form arches 

 on the lids between the orbicularis muscle and tarsal cartilages, 



17 



