////; COMMON CAROTID ARTERIES. 



593 



Internal maxillary artery. It does not traverse the subsphenoidal canal, aa that 

 bony passage does not exist. 



The following are its principal branches : 



1. The inferior dental artery, which emits some pterygoM ramuscules. 



2. The fpheno-gpimm* artery, arising from the same point as the preceding, often in 

 common with it, giving also some pterygoid branches, and entering the cranium by the 

 oval foramen to aid in the formation of the rtfseau admirable, in a way to be indicated 

 hereafter. 



3. The deep posterior temporal artery, which detaches a maueterlc artery. 



4. The deep anterior temporal artery. 



5. The buecal, principally destined to the masseter muscle. 



6. The ophthalmic artery, longer than in the other animals, forming a loop before 

 traversing the orbital foramen, and giving a supra-orbital branch and a fasciculus of 

 muscular and ciliary arteriet. Near the point where the originating trunk of this 



Fig. 287. 



I 111: KESEAU ADMIRABLE OF THE SHEEP, SEEN IN 1'KOHI.K. 



1, Carotid artery; 2, Occipital artery; 3, Lingual artery; 4, Maxillo-muscular 

 artery ; 5, Posterior auricular artery ; 6, Superficial temporal artery ; 7, Anterior 

 auricular artery ; 8, Middle temporal artery ; 9, Transverse artery of the face ; 

 10, Internal maxillary artery; 11, Inferior dental artery; 12, Spheno-spinous 

 artery ; 13, Deep posterior temporal artery ; 14, Deep anterior temporal artery ; 

 15, Commencement of the originating arteries of the reseau admirable; 16, Ence- 

 phalic reseau admirable; 17, Trunk of the encephalic arteries arising from the 

 reseau admirable ; 18, Ophthalmic artery ; 19, Ophthalmic reseuu admirtMe ; 20, 

 Common origin of the arteries of the eye; 21, Supra-orbital artery; 'J_', l'.u.il 

 artery; 23, Superior dental artery; 24, Orbital branch of the latter 

 Palatine artery ; 26, Nasal artery. 



fasciculus is detached, the ophthalmic artery shows on its course a very rimmis arrange- 

 ment which has not yet been noticed, we believe : this U a veritable arterial |>l< \UH in a 

 ganglionic form, in principle exactly disposed as that alx>ut to I* dcwriU-.! ( Ki^. -JST. |;i) 



7. The originating arterie* of the rfteau odmirnMr, usually coiiMMin;; of two principal 

 vessels, arising with the ophthalmic, passing backward through tin- snprasphenoidal 

 canal, and ramifying in a special manner to form a mas* of reticular twigs, deipii.t ! 

 the rfseau odMftwNe (Fip. 287, 16). 



This network is a small ovoid mass, elongated trorn before to behind, placed In-neat h 

 t!i- iluri inut.-r, nn the side of the Bella turcica. within the superior maxillary nerve, nn.l 

 composed of a multitude of fine arterial divisions which anastomose with each other 



