SPECIAL ANATOMY. 139 



runs from tlie internal surface of the long cornu of os 

 hjoides, and blends with its fellow upon the upper surface 

 of the pharynx. Stylo-pharyngeus arises in common with 

 tensor palati from the styloid process of the petrous tem- 

 poral bone, and also is attached to the lateral part of 

 the Eustachian tube ; it blends with its fellow on the 

 wall of the pharynx. Potato pharyngeus has been already 

 noticed. 



The pharynx is suf)plied with blood by the ascending 

 pharyngeal hra^iches of the submaxillary artery, and also by 

 branches from the internal maxillary. It is partly supplied 

 with nerve force by the sympathetic, partly by the glosso- 

 pharyngeal, and superior laryngeal branch of the pneumo' 

 gastric. The glcsso-pharyngeal (or ninth) cranial nerve 

 arises from the lateral part of the medulla oblongata, 

 and in passing out of the cranium by foramen lacerum 

 basis cranii has a ganglion upon it. Passing over the wall 

 of the guttural pouch it has intimate connection with the 

 large nerves of this neighbourhood and with the superior 

 cervical ganglion. It then divides, sending one branch to 

 supply the posterior and lateral parts of the tongue with 

 common sensation and the special sense of taste ; the other 

 to the pharynx. 



By an incision in a longitudinal direction through the 

 face to one side of the central line we may expose the 

 nasal chambers, and by remo^'al of an oblong portion of 

 the septum nasi we may expose the turbinated bones in 

 situ. The NASAL CHAMBERS are cavities elongated in 

 a direction from before backwards, bounded anteriorly by 

 the anterior nares, posteriorly by the posterior nares. The 

 chamber of one side is separated from its fellow inwardly 

 by the septum nasi, a thick layer of cartilage, which is 

 attached along its inferior margin into the groove of the 

 vomer ; posteriorly to the crista galli process of the ethmoid 

 bone ; superiorly it bifurcates and becomes spread out over 

 the lower surface of the nasal bones, beyond which it ex- 

 tends anteriorly, forming a point in front of the nasal peak, 

 to which, on either side, an inverted comma-shaped piece 

 of cartilage is attached, being composed of the alal and 

 corneal cartilages. The alal cartilage is circular, pre- 

 senting a superior and an inferior surface, and from its 

 inner margin the corneal cartilage runs in a direction 

 forwards, downwards, and outwards. The inferior extre- 



