92 . ANATOMY OF THE RABBIT 



C. GLANDS OF HEAD AND NECK 



The glands of this region are of three kinds: Sahvary, lym- 

 phatic, and ductless. 



SALIV^ARY GLANDS 



Three pairs of glands comprise the salivary, or "oral diges- 

 tive" glands. 



The parotid is a large, somewhat diffuse gland which lies 

 ventrad of the ear and immediately caudad of the ascending 

 ramus of the mandible. Its duct (ductus parotideus parotid-, 

 Stenno's-, or Stenson's duct) passes craniad over the masseter 

 muscle (6^) to open into the mouth through the cheek near the 

 diastema of the mandible. 



The submaxillary gland Hes ventrad to the parotid and 

 caudoventrad to the angle of the mandible. Its duct (ductus 

 submaxillaris, submaxillary-, or Whartons duct) leaves the 

 dorsal side of the gland, and accompanied by the duct of the 

 sublingual gland, passes between the digastric (64) and masseter 

 (67,) muscles, dorsocraniad along the muscle under the tongue 

 and enters the mouth through the lateroventral side of the 

 tongue (frenulum) near the beginning of its anterior third. 

 The anterior facial branch of the external jugular vein partly 

 separates the submaxillary from the sublingual gland. 



The sublingual gland is about the same size as the submaxil- 

 lary gland and lies immediately craniad to it and ventrad to the 

 angle of the jaw. Its duct accompanies that of the submaxillary 

 gland to the mouth. 



Lymph Glands : There are several small, subcutaneous 

 lymph glands along the neck and throat and between the 

 mandibular rami. The student should locate some of these 

 and the two large deep cervicals which he, one on either side 

 laterad to the common carotid artery (30) and caudad to the 

 tympanic bulla. This gland is about two cm. long and is usually 

 stained red by carmine from the injection mass in the common 

 carotid artery. There are numerous smaller lymph glands in 

 this region. 



