66 A MANUAL OF ANATOMY. 



The Parotid Gland. Figs. 3, 14. 



This is a large salivary gland, which fills up the space 

 below the zygoma, and between the ramus of the lower 

 jaw and the auditory and mastoid processes, and extends 

 downward as low as the level of the angle of the jaw. 



Its lobes extend forward (pterygoid), upward (glenoid), 

 and inward (carotid), between the surrounding structures. 

 One portion usually detached and lying upon the masseter 

 muscle is the socia parotidis, which connects with the paro- 

 tid duct by a separate opening. 



The duct of the parotid gland is Stenson's. It passes 

 forward across the masseter half an inch below the zygoma, 

 pierces the buccinator muscle, and opens into the mouth 

 opposite the second upper molar tooth. Figs. 2, 3, 4. 



The gland is covered by the extension upward of the 

 cervical fascia called the parotid fascia. See page 59. 



It is separated from the submaxillary gland by the stylo- 

 maxillary ligament. Page 59. 



Within the parotid are found the facial nerve and its 

 primary divisions and branches (forming the pes anserinus) ; 

 the termination of the external carotid artery, its posterior 

 auricular branch, the beginning of the internal maxillary 

 and the temporal arteries ; the transverse facial from the 

 temporal, as also the glandular branches from these arteries 

 to the parotid itself; and the temporomaxillary vein. 



The arterial supply is from the arteries within the 

 gland, the nerve supply from the seventh, great auricular, 

 auriculotemporal, and sympathetic plexus on the carotid 

 artery. 



The veins open into the temporomaxillary sinus. 



The lymphatics empty into the superficial and deep 

 lymphatic glands of the neck. 



