364 ABDOMEN 



seefp. 359. Above the superior wall of the deep compartment lie the apex 

 of the prostate gland and the anterior borders of the levatores ani muscles. 

 To approach the prostate, therefore, through the urethral triangle, a series 

 of alternating fascial and muscular strata would have to be divided, viz. 



1. The fascia of Colles. 



2. The superficial perineal muscles. 



3. The superficial fascia of the urogenital diaphragm. 



4. The deep transverse perineal muscle and the sphincter of the membranous 



urethra. 

 5- The deep fascia of the urogenital diaphragm. 



This, however, is not a practicable way of approaching the prostate, and 

 the method which should be adopted to display the posterior surface of the 

 gland will be described when the investigation of the pelvic fascia is 

 undertaken (see p. 566). 



A pad of tow, soaked in a mixture of spirit and carbolic 

 acid, should be placed in the perineum, and the flaps of skin 

 carefully stitched over it. On the fourth day after the body 

 has been brought into the dissecting-room, it is placed upon 

 its back, and the dissectors of the abdomen commence work 

 upon the abdominal wall. 



FEMALE PERINEUM. 



The boundaries of the female perineum are identical with 

 those in the male. The region is wider, however, and of 

 greater extent. For purposes of description it is subdivided, 

 by an imaginary transverse line drawn in front of the anus 

 and the tuberosities of the ischium, into a posterior ; anal 

 triangle, and an anterior, urogenital triangle. 



External Anatomy. The anal triangle presents the same 

 points for consideration as in the male. The external 

 anatomy of the urogenital triangle demands careful study 

 because it includes the external organs of generation. They 

 are 



1. The mons Veneris. 



2. The labia majora. 



3. The labia minora. 



4. The clitoris. 



5. The urethral opening. 



6. The vaginal orifice. 



All these parts are included under the common term of 

 Vulva. 



Mons Veneris. This is a marked cushion-like eminence 

 situated in front of the pubes. The projection is due to 



