424 



ABDOMEN 



bones, and from the upper parts of the pubic rami. Then the 

 bones must be cut through, with the saw, on each side, along a 

 line running from below the attachment of the arcuate ligament 

 up to the lateral side of the pubic tubercle (see Fig. 198). By the 

 saw-cuts a considerable part of the anterior wall of the pelvis is 

 isolated, and it can be removed when the vesical layer of the 



Arcuate ligament 



Urethra 



Inferior fascia of .^...^ 

 urogenital diaphragm / /T 



Bulb * 

 Superior fascia 



of urogenital ~~~"s? 

 diaphragm -.%< 

 , 



M. levator ani 



Dorsal vein of penis 



.Dorsal artery of penis 

 Dorsal nerve of penis 

 Deep artery of penis 



Inferior fascia of uro- 

 genital diaphragm 



Cms penis 



FIG. 198. Dissection to show the Dorsal Vessels and Nerves of the Penis 

 and their relations to the fasciae of the Urogenital Diaphragm. The 

 upper part of the deep transverse perineal muscle has been left between 

 the two fasciae. The lower part has been removed to expose the 

 superior fascia. The lines of the saw-cuts made in the dissection 

 are indicated on the bones by the dotted lines. 



endo-pelvic fascia has been detached from its posterior surface. 

 Having been removed, it must be kept for the examination of 

 the inter-pubic joint. Whilst the bone is being removed care 

 must be taken to avoid injuring the dorsal vein of the penis. 



After the bone is removed the dissector will see the anterior 

 border of the vesical layer of the pelvic fascia, which has been 

 detached from the back of the pubis. In the fascia he will 

 readily recognise the thickened bands of the pubo-prostatic 



