Arteries of the Head. 



393 



A. temporalis profunda posterior 

 A. temporalis media 



A. masseterica 



A. temporalis profunda anterior 



Ramus 

 occipitalis 



Bamus - - 



auricularis 



A. temporalis ^ 

 superfieialis 

 A. tympanica 

 anterior 

 -A. auricularis _ 

 profunda 

 Ramus mastoideus 



A. maxillaris interna _ 

 A. auricularis posterior ._ 



Ramus muscularis 

 Ramus descendens 



A. occipitalis 



M. semispinalis capitis 



M. splenius cervicis 



,A. maxillaris 

 interna 



A. alveolaris 

 sup. post. 

 Ramus 

 pterygoideus 

 A. infraorbitalis 



-A. meuingea 

 media 



A. buccina- 

 toria 



A. alveolaris 



inferior 



A. mentalis 



A. sternocleidomastoid ea 



A. carotis interna 

 A. carotis externa 



A. maxillaris externa 



438. Deep arteries of the face, viewed from the right. 



(The parotid gland has been entirely removed, the zygoma, the ramus of the lower jaw and 

 the muscles of the lower jaw have been partially removed [see Fig. 294J ; the canalis mandibulae 



has been chiselled open in a part of its course.) 



8. A. maxillaris interna (internal maxillary artery) (see also Figs. 439441) runs 

 forward on the medial surface of the collum mandibulae (l^t portion), then, tortuous, forward 

 and upward, usually on the lateral surface of the m. pterjgoideus externus between it and the 

 m. temporalis (2d portion) to the fossa pterygopalatina, in which (S'd portion) it divides into its 

 terminal branches. Not infrequently it lies on the medial surface of the m. pterygoideus externus 

 and arrives between the two heads of this muscle into the fossa pterygopalatina. Branches: 

 1 "t portion : 



a) A. auricularis profunda backward to the joint of the jaw, auditory canal , and tym- 



panic membrane. 



b) A. tympanica anterior upward through the fissura petrotympanica [Glaseri] into the 



middle ear (see also Fig. 442). 



c) A. alveolaris inferior (0. T. mandibular or inferior dental artery) runs downward and 



foi-ward between the ramus mandibulae and the m. pterygoideus intemus to the 

 foramen mandibularc; it passes through the canalis mandibulae, giving off branches 

 to the roots of the teeth, gums and bone. 



ca) Ramus mylolnjoideus goes off before the entrance of the arteiy into the canalis , 



mandibulae and runs, in the sulcus mylohyoideus, forward and downward. 



cb) A. mentalis leaves the canal through the foramen mentale and goes to the chin. 



