INSALIVATION. 



173 



its proximity to the ear, lying below and in front of it. Inflam- 

 mation of this gland is parotitis or mumps. Its secretion passes 

 out by Stenwn's duct, which is about 6 cm. long and the size of 

 a crowquill, and is discharged into the mouth on the inner surface 

 of the cheek, opposite the second molar tooth of the upper jaw. 



FIG. 96. View of the salivary glands (right side) (the inferior maxilla has been 

 removed from the symphysis to the ascending ramus) : A, parotid gland, with A' 

 its anterior prolongation ; S, submaxillary gland; C, sublingual gland; D, gland 

 of Niihn or of Blandin ; E, gland of Weber, a, duct of Steno ; 6, duct of Wharton 

 with b' its orifice on the floor of the mouth ; c, excretory ducts of the sub- 

 lingual gland. 1, sternocleidomastoid ; 2, posterior belly of the digastric; 3, 3^ 

 mylohyoid, right and left; 4, hyoglossus ; 5, genioglossus ; 6, pharyngoglossus; 7, 

 geniohyoid muscle; 8, masseter ; 9, buccinator; 10, middle constrictor of the 

 pharynx; 11, primitive carotid; 12, internal jugular vein; 13, external carotid 

 artery ; 14, lingual artery ; 15, facial artery ; 16, facial vein ; 17, superficial tem- 

 poral artery ; 18, transverse facial artery ; 19, facial nerve ; 20, auriculotemporal 

 nerve ; 21, lingual nerve, displaced slightly upward on account of the position of 

 the tongue. 



The nerves which supply this gland are branches of the carotid 

 plexus of the sympathetic, the facial, the auriculotemporal, and 

 the great auricular nerve. 



The submaxillary gland is situated beneath the lower jaw. Its 

 secretion is discharged by Wharton' s duct, which is about 5 cm. 



