PAROTID REGION 



163 



antero-medial and postero-medial surfaces, respectively. The 

 upper border circumscribes the upper surface and intervenes 

 between it and the other three surfaces. 



The superficial surface is irregular in outline (Figs. 4 and 

 60). It is covered by skin, superficial fascia, platysma and 

 risorius, and deep fascia. Embedded in it are a few superficial 

 parotid lymph glands, which receive lymph from the anterior 

 part of the scalp, from the face, above the level of the mouth, 

 and from the lateral surface of the auricle. Posteriorly, 

 it is in relation with the mastoid process and the anterior 



osterior part of 

 uerior border 



superor 



v Anterior part of superior border 



-Surface in contact with external meatus 

 Anterior border 



Duct of parotid 

 _ .Superficial surface 



Posterior facial vein 



Posterior border 



FIG. 60. Parotid Gland, lateral view. 



border of the sterno-mastoid muscle. Above, it touches the 

 posterior part of the lower border of the zygoma and the lower 

 surface of the external meatus. 



From beneath the part in contact with the zygoma emerge 

 the auriculo-temporal nerve, the temporal branches of the 

 facial nerve, and the superficial temporal artery, on their way to 

 the scalp ; and the posterior facial vein disappears under cover 

 of it. Its lower extremity, which is wedged between the angle 

 of the mandible and the anterior border of the sterno-mastoid, 

 is usually in contact with one of the upper deep cervical glands, 

 whilst the cervical branch of the facial nerve, the posterior 

 facial vein, and a communication to the external jugular 

 vein emerge from it; the former two pass downwards and 

 forwards, and the latter one passes downwards and backwards, 

 m 11 a 



