SUDORIFEROUS AND SEBACEOUS GLANDS. 



73 



FIG. 57. SUDORIFEROUS TUBULAR GLAND. 



A, Diagrammatic sweat-gland. C. Its duct. D. Coiled, glandular part. 



B. The same, showing a transverse section of both parts, x 400. C'. The duct lined with 

 several layers of cells. D'. The coiled glandular part lined with columnar cells in a single 

 layer. 



A. 

 B. 

 C. 

 D. 



X400. 



FIG. 58. SINGLE LOBULE OF A SEBACEOUS GLAND. 

 The fibrous wall of the sac. 

 Involuntary muscular element of the wall. 

 Polyhedral cells filling rhe sac completely. 

 Fatty degeneration of the parenchyma at the neck of the gland, formation of sebum. 



