224 



NORMAL HISTOLOGY. 



areolar tissue devoid of fat. The skin is without hairs on the ante- 

 rior two-thirds of the penis, but contains sebaceous glands, which 

 are especially numerous in the fold of the prepuce, where it is 

 attached near the corona of the glans, glands of Tyson. 



2. The Prostate. This body is regarded as the analogue of the 

 uterus, its utricle corresponding to the cavity of that organ. It has 

 a fibrous investment, which merges into the areolar tissue connect- 

 ing the prostate with the surrounding structures and, in its deeper 

 portions, contains smooth muscular tissue, which accompanies it in 

 forming the stroma of the organ. Within this stroma are the 

 prostatic glands, composed of acini, lined with epithelium of the 

 columnar variety, and opening into a series of ducts having their 

 orifices in the floor of the urethra. The glandular alveoli frequently 

 contain little concretions of a substance closely resembling amyloid, 

 corpora amylacea, which often display a marked concentric lamina- 

 tion (Fig. 199). 



FIG. 199. 



Section of the prostate. (Heitzmann.) Sections of one acinus and portions of three others 

 are included in the figure. These are surrounded by fibrous tissue traversed by bundles 

 of smooth muscular fibres. E, epithelial lining of the acini ; M, M, smooth muscular 

 tissue ; C, concretions of amyloid material, showing concentric lamination. 



The two ejaculatory ducts pass through the prostate to open into 

 the urethra in its course within that organ. A little behind their 

 orifices is the verumontanum, containing erectile tissue, which is 



