56 GENERAL ANATOMICAL CHARACTERS 



secretion into the cavity by a distinct tube or duct, which traverses 

 the mucous membrane. To the latter alone the name of " salivary 

 glands" is ordinarily appropriated, although the distinction 

 between them and the smaller racemose glands is only one of 

 convenience for descriptive purposes, their structure being more or 

 less nearly identical ; and, since the fluids secreted by all become 

 mixed in the mouth, their functions are, at all events in great part, 

 common. Under the name of salivary glands are commonly 



sm 



FIG. 19. Salivary Glands of the Genet. A, Right side of the head dissected ; p, parotid 

 gland ; d, Steno's duct ; sm, submaxillary gland, traversed by the jugular veins (jv) ; o, aperture 

 of Steno's duct. B, Part of the head with the lip drawn up to show (st.d) aperture of 

 Steno's duct ; z.gl, zygomatic gland ; o, aperture of do. ; z, zygomatic arch. (Mivart, Proc. 

 Zool. Soc. 1882, p. 504.) 



included (1) the "parotid" (p), situated very superficially on the 

 side of the head, below or around the cartilaginous external 

 auditory meatus, and the secretion of which enters the mouth by 

 a duct (often called Steno's or Stenson's) which crosses the masseter 

 muscle and opens into the upper and back part of the cheek 

 (Fig. 19); and (2) the "submaxillary" (sm), situated in the neck, 

 near or below the angle of the mandible, and sending a long duct 



