254 DEEP PERINEAL FASCIA. 



the os pubis and ischium ; posteriorly it is reflected backwards be- 

 neath the transversus perinei muscles to become connected with the 

 deep perineal fascia ; while anteriorly it is continuous with the dartos 

 of the scrotum. 



The deep perineal fascia (Camper's ligament, triangular liga- 

 ment) is situated behind the root of the penis, and is firmly stretched 

 across between the ramus of the os pubis and ischium of each side 

 so as to constitute a strong septum of defence to the outlet of the 

 pelvis. At its inferior border it divides into two layers, one of which 

 is continued forwards, and is continuous with the superficial perineal 

 fascia ; while the other is prolonged backwards to the rectum, and 

 joining with the anal fascia assists in supporting the extremity of 

 that intestine. The deep perineal fascia is composed of two layers, 

 which are separated from each other by several important parts, 

 and traversed by the membranous portion of the urethra. The ante- 



* A side view of the viscera of the pelvis, showing the distribution of the perineal 

 and pelvic fascise. 1. The sytnphysis pubis. 2. The bladder. 3. The recto- vcsical 

 fold of peritoneum, passing from the anterior surface of the rectum to the posterior part 

 of the bladder ; from the upper part of the fundus of the bladder it is reflected upon 

 the abdominal parietes. 4. The ureter. 5. The vas deferens crossing the direction of 

 the ureter. 6. The vesicula seminalis of the right side. 7, 7. The prostate gland 

 divided by a longitudinal section. 8, 8. The section of a ring of elastic tissue encir- 

 cling the prostatic portion of the urethra at its commencement. 9. The prostatic por- 

 tion of the urethra. 10. The membranous portion, enclosed by the compressor urethrse 

 muscle. 11. The commencement of the corpus spongiosum penis, the bulb. 12. The 

 anterior ligaments of the bladder formed by the reflection of the pelvic fascia, from the 

 internal surface ofMheos pubis to the neck of the bladder. 13. The edge of the pelvic 

 fascia at the point where it is reflected upon the rectum. 14. An interval between the 

 pelvic fascia and deep perineal fascia, occupied by a plexus of veins. 15. The deep 

 perineal fascia; its two layers. 16. Cowper's gland of the right side situated between 

 the two layers below the membranous portion of the urethra. 17. The superficial 

 perineal fascia ascending in front of the root of the penis to become continuous with 

 the dartos of the scrotum (18). 19. The layer of the deep fascia which is prolonged 

 to the rectum. 20. The lower part of the levator ani ; its fibres are concealed by the 

 anal fascia. 21. The inferior segment of the funnel-shaped process given off from the 

 posterior layer of the deep perineal fascia, which is continuous with the recto-vesical 

 fascia of Tyrrell. The attachment of this fascia to the recto-vesical fold of peritoneum 

 is seen at 22. 



