M:TI:L 



to the ilura mater, and particularly to the fulx cercbri, anastomoses on tin; 

 median line, 1>: low the process of tho cristft galli, with that of the 

 opposite side, and afterwards joins tho anterior cerebral artery. 



The natal braurk traverses the cribriform plate of the ethmoid bone, and 

 divides into a number of rainuscules, which descend either <>n tin- etlmioidal 

 cells, or on the middle septum of the iiosc, where their ramifications form 

 arterial tufts of a pleasing aspect. 



8. BUCOAL ABTEKY (Fig. 286, 37). The buccal artery emerges at an acute 

 angle from the internal maxillary, a short distance in front of the orbital 

 hiatus, and descends obliquely between the maxillary bone and the superior 

 insertion of the internal pterygoid muscle, terminating in the posterior 

 part of the molar glands, and in the alveo-labial and maxillo-labial muscles. 



In its course it gives some insignificant ramuscules to the pterygoid 

 muscles, as well as the masseter, and a long adipose branch to the cushion 

 in the temporal fossa. The latter sometimes comes directly from the 

 internal maxillary artery. 



9. STAFHYLI.V ARTERY (Fig. 286, 38). A very thin filament, which 

 accompanies the posterior palatine nerve in the groove of the same name, 

 and is distributed to tho soft palate. 



10. SUPERIOR DENTAL ARTERY (Fig. 286, 39). This vessel, which is 

 also named the siipermaxiUo-dcnta! artery, enters the superior dental canal, 

 arrives near its inferior or infra-orbital opening, and then divides into two 

 thin branches. One of these continues in the same course in the super- 

 maxillary bone, to supply arterial blood to the alveoli of the foremost 

 molars, the tusk, and the incisor teeth ; the other passos out of the canal 

 with the terminal divisions of the superior maxillary nerve, and com- 

 municates on the forehead with a ramuscule from tho external maxillary 

 artery. 



On its way, the superior dental artery emits several collateral branches, 

 the majority of which commence in the interior of the dental canal, and 

 pass either to the alveoli of the posterior molars, tho tissue of the bone, or 

 the membrane lining the sinuses. One of these branches the urliilal, and 

 the 1-irgest escapes from the principal artery before its entrance into the 

 siipermaxillury canal, creeps along tho floor of the orb ;t towards the : 

 angle of tho eye, whence it descends <>n the forehead, after giving off 

 sunn- divisions to the caruncle of the eye, the lachrymal sac, and the lower 

 y. lid. 



11. NASAL OR SPHENO-PALATINK AUTKUY. -- Situated, at first, at the 

 b ittom of the maxillary hiatus, this artery, springing at a right an^le from the 

 parent trunk, traverses tin- nasal foramen, and separates int-i two terminal 

 branches an external and an internal in ramifying on the walls of tho 

 nasal cavity. 



TERMINAL BRANCH OF THE INTERNAL MAXILLARY ARTERY. PALATO- 

 LABIAL OR PALATINE ARTERY. (Fig. 148, 3.) A continuation of the 

 int nial maxillary, this vessel at first traverses the palatine canal, follows 

 the palatine groove to near tho superior incisors, in then inflected inwards 

 al)..\-( a small cartilaginous process (Fig. 148,4), and unite; on the nn 1 an 

 line \\ith the artery of the opposite side, forming an arch whose convexity 

 is forwards, and from which proceeds a single trunk that passes into the 

 incisive foramen. 



The palatine arteries, in their advance, furnish a series ol 

 destined to the anterior part of the soft palate, the membrane* on the r. .if of 

 'lie mouth, a'id th- -.Minis and upper !, th. 



