470 



SECRETING GLANDS. 



TCH. xxix. 



cavity into minute ducts, which ducts in the large glands con- 

 verge and unite to form larger and larger tubes, and at length 



i< 



Fig. 392. Diagram of types of secreting glands. A, simple glands, viz., g, straight lube ; 

 h, sac ; f, coiled tube, u, multilqcular crypts ; k, of tubular form ; I, saccular. 

 c, racemose, or saccular compound gland ;"n, entire gland, sho\ring branched duct 

 and lobular structure ; ?;, a lobule, detached \dth c, branch of duct proceeding from 

 it. r>, compound tubular gland. (Sharpey.) 



open by one common trunk on a free surface. The larger 

 racemose glands like the salivary glands are called compound race- 

 mose glands. On internal secretions, see 1 p. 321. 



