336 



THE SALIVARY GLANDS. 



and fascia, and partially by the platysma muscle. It is bounded above 

 by the zygoma, below by a line drawn backwards from the lower border 

 of the jaw to the sterno-mastoid muscle, and behind by the external 

 meatus of the ear, the mastoid process, and sterno-mastoid muscle. Its 



Fig. 236. 



Fig. 23G.— Sketch OF a Superficial Dissection op the Face, showing the Position 

 OP THE Parotid and Submaxillary Glands (Allen Tliomson). Two-Fipths the 

 Natural Size. 



p, the main part of tlie parotid gland ; p', the small part, which lies alongside the duct, 

 on the masseter muscle ; d, the duct of Stenson before it perforates the buccinator muscle ; 

 a, transverse facial artery ; n, n, branches of the facial nerve emerging from below the 

 gland ; /, the facial artery passing out of a groove in the submaxillary gland and ascend- 

 ing on the face ; s m, superficial larger portion of the submaxillary gland lying over the 

 posterior part of the mylo-hyoid muscle. 



anterior border, which lies over the ramus of the lower jaw, is less 

 distinctly defined, and stretches forwards to a variable extent on the 

 masseter muscle. It is from this anterior border of the gland that the 

 excretory duct passes off; and there is frequently found in connection 

 with the duct, and lying upon the masseter muscle, a small process or 

 a separated portion of the gland {p'), which is called gJamhila soda 

 parotidis. On trying to raise the deeper part of the parotid gland 

 from its position, it is found to extend far inwards, between the 

 mastoid process and the ramus of the jaw, towards the base of the skull, 

 and to be intimately connected with several deep-seated parts. Thus, 

 above, it reaches into and occupies the posterior part of the glenoid 

 cavity ; behind and below, it touches the digastric muscle, and rests 



