320 



SECKETION. 



arranged in groups or lobules (c, Fig. 105). Such are all 

 those commonly called mucous glands, as those of the tra- 

 chea, vagina, and the minute salivary glands. Such, also, are 



Plans of extension of secreting membrane by inversion or recession in form of 

 cavities. A, simple glands, viz., g, straight tube ; h, sac ; i, coiled tube. B, multi- 

 Jocular crypts ; k, of tubular form ; I, saccular. C, racemose, or saccular compound 

 gland ; TO, entire gland, showing branched duct and lobular structure ; , a lobule, 

 detached with o, branch of duct proceeding from it. D, compound tubular gland 

 (after Sharpey). 



the lachrymal, the large salivary and mammary glands, 

 Brunn's, Cowper's, and fiuverney's glands, the pancreas and 



