10 THE ANATOMY OF THE ADULT HUMAN SALIVARY GLANDS 



The ventral \iew of the two parotid glands is given in Fig. ii, 

 with the dixided phar\Tix between them. The preparation shows the 

 deep preauricular glandular process extending mesad of the internal 

 maxillary (jo) and superficial temporal (j/) arteries in front of the 

 cartilagenous meatus, in relation to the stylopharyngeus (25) and 

 styloglossus (24) muscles. The transverse width of the ventral 

 portion of the gland is also better realized in this exposure. 



Separate glandular masses in relation with the terminal {intramural 

 and buccinator) portion oj the parotid duct. — Occasionally these ele- 

 ments are foimd in the adult human subject. They are character- 

 ized by the following features : — 



1. They do not communicate with the parotid duct, but open by 

 small independent and separate orifices on the oral mucosa, caudal 

 to the parotid duct opening. 



2. When well developed, a series of these little glands (6 to 7 in num- 

 ber) extends caudad from the parotid duct terminal, turning to the 

 ental side of the masseter muscle, while the parotid duct diverges to 

 the ectal surface of the muscle. The cephalic masseteric border thus 

 separates the caudal members of this group from the parotid duct. 



3. The glands, when present, are for the most part embedded in 

 the entomasseteric fat mass of the "sucking-pad." 



4. The little bodies of the glands he on the lateral surface of the buc- 

 cinator muscle, which is pierced by the small ducts on their way to 

 the oral mucous surface. 



5. The majority of the glands lie ventral as well as mesal to the 

 parotid duct terminal. Occasionally a few nodules are found dorsal 

 to the parotid duct, close to the point of its engagement in the mucosa. 



6. These latter glands appear to be scattered caudal members 

 of the incomplete and feebly developed series of glandular elements 

 occupying the superior alveobuccal sulcus and occasionally continued 

 cephalad into the superior labial glands. They should, I beheve, be 

 distinguished from the first-mentioned series, lying ventral and mesal 

 to the parotid duct, which separates them from each other. 



7. The entomasseteric series of separate small glands clearly are the 

 human reduced representatives of the group of the orbital glands which 

 are so highly developed in some of the carnivora. I have hence so 



