206 



THE SKIN 



tion of this membrane contains many longitudinal fusiform fibres 

 whose nature is somewhat doubtful, though they have been most 

 frequently considered to be smooth muscle fibres.* These fibres 



FIG. 181. FROM A SECTION OF THE ABDOMINAL INTEGUMENT OF AN INFANT. 

 Beneath a, and a', sweat glands are seen ; the secreting portion at a' is detached 

 from its duct ; i, i, epidermis ; c, o, derma ; d, d, panniculus adiposus. Hematein and 

 eosin. Photo, x 65. 



are frequently branched, their processes often extending between 

 the cells of the secreting epithelium nearly to the lumen of the 

 gland. 



The secreting epithelium of the fundus consists of tall colum- 

 nar cells which possess a large spheroidal chromatic nucleus and 



* The recent observations of Mallory (J. Med. Research, 1903) indicate that 

 these fibres are a peculiar type of connective tissue element which he names 

 Hbroglia. Similar though smaller fibres are found in the basement membranes 

 of other tubular glands e. g., kidney, lachrymal, and mammary glands. 



