THE PERINEUM, FEMALE. 427 



DISSECTION. 



Remove the perineal fascia and dissect out the perineal triangle. This 

 will be more difficult to do than in the male, as the parts are smaller, the 

 sphincter vaginae (corresponding to the accelerator urinae) imperfectly 

 developed and perforated by the vaginal orifice. 



After careful dissection, consult the male perineal triangle, page 408. 



Transversus Perinsei. Same as in the male. See page 



410. 



The Erector Clitoridis. Smaller, but similar to the erector 



penis in the male. See page 408. 



The Sphincter Vaginae. 



In the male the accelerator urinae or the bulbocavernosus, 

 page 410. Originates from the tendinous centre of the 

 perineum, passes forward to the parts about the clitoris, 

 surrounding the vagina. It is an indistinct, imperfectly 

 developed plane of muscular fibres. 



DISSECTION. 



Divide the transversus perineae and sphincter vaginae muscles and reflect 

 them. Cut away the erector clitoridis. 



Draw the clitoris forward and remove the mucous membrane between it 

 and the urethral orifice. 



The orifice of the urethra presents in the middle line nearly midway 

 between the pubic arch and the vaginal orifice. 



The Bulb of the Vagina, or Bulbi Vestibuli. 



This is the female representative of the corpus spongio- 

 sum in the male. The bulb of the vagina consists of two 

 portions, each about an inch long and lying upon the front 

 and sides of the vaginal opening and just under the 

 sphincter vaginae muscle. The bulbs are connected in 

 front over the meatus urinarius by a narrow neck (pars 

 intermedialis of Kobelt). 

 The Clitoris. Figs. 85, 86. 



Morphologically identical with the male penis. It is 



