DIGESTIVE GLANDS. 



211 



3. Submaxillary Gland (mixed gland). In man 



this gland is composed of tubules having a serous 

 secretion and similar to those of the parotid gland, 

 and tubules with alveolar enlargements like the sub- 

 lingual gland that secrete mucus. Its histology, 

 therefore, would be a repetition of what has already 

 been described in the parotid and sublingual glands. 

 The submaxillary gland is next in size to the pa- 

 rotid, which it resembles in color and lobulation. It 



Parietal cell. 



Acinus. 



Parietal cell. 



Intralobular duct. Interlobular duct. 



Fig. 157. Section from the human submaxillary gland 



is placed against the inner surface of the angle of the 

 lower jaw in close proximity to the parotid gland. 

 It has a complete firm capsule derived from the cer- 

 vical fascia. Connective- tissue elements from the 

 capsule ramify between the lobes and lobules of the 

 gland. 



The submaxillary, or Wharton's duct, is about two 

 inches long, passes forward beneath the mylohyoid 

 muscle, then along the inner side of the sublingual 

 gland to open on the summit of a small papilla situ- 



