— 105— 



tissue is arranged in an outer more (l(;eply stained border, 

 the cortical zone, and a central portion, the medulla. In 

 the cortex the granular cells are arranged in small groups 

 in its peripheral portion ; this iscalledthe glomerular zone. 

 Then comes a broad area, in wliich the cells are arranged 

 in quite regular columns, tlif fascicular zone. Finally 

 there is a third sti-atuni next to the medulla in which 

 anastomosing strands ot" cells are made out ; this is the 

 reticular zone. In the medulla are to be seen cords of 

 irregular, pigmented cells, between which large vascular 

 spaces are found. Sketch a band through the cortex and 

 medulla as seen under high power. 



(f) Prostate. 



The prostate of a (lo<j was divided transversely into soveral 

 pieces, hardened in mercuric chloride, stained in Delatield's liicnia- 

 toxylin, and sectioned. Tlie sections were fixed to cover ghisses, 

 and counter-stained in eosin, deliy(h-ated, and cleared in oil of ber- 

 gamot and xylol. INIount on l^alsani. 



Study first under low power. The capsule of the pros- 

 tate is made up largely of non-striped muscle tissue and a 

 small amount of fibrous tissue. From the capsule fibro- 

 muscular trabeculae pass toward the urethral canal, form- 

 ing a framework for the glandular structure. The glands 

 are compound tubular. The secreting tubules are lined by a 

 single layer of short columnar cells. The gland ducts 

 which empty into the urethra are relatively large, and 

 lined for a distance with transitional epithelium. In the 

 outer portion of the prostate, and here and there in the 

 trabeculse between the glands, smaller or larger sympa- 

 thetic ganglia are to be seen. The prostatic urethra is lined 

 by transitional epithelium. Sketch about ^ of the section 

 as seen under low power, and a portion of one of the glands 

 as seen under high power. 



