PELVIS. ITU 



pelvic plexus and some inferior branches of the two 

 last sacral pairs. 



Yagina. — Situation : in the pelvic cavity between 

 the rectum and the bladder. Internal surface ridged 

 bj longitudinal folds. Structure : an external coat 

 muscular, an internal mucous ; and arteries from tlie 

 internal pudic ; nerves from pelvic plexus. 



YuLTA. — Situated below the anus. It presents an 

 external opening with two lips, a superior and inferior 

 connnissure ; the latter lodges the clitoris covered by a 

 fold of mucous membrane called the prepuce. At 

 some four or five inches from this external opening the 

 meatus urinarius and its valve. The hymen is a mem- 

 brane which separates the cavity of the vagina from 

 that of the vulva. Structure : a mucous membrane, 

 an erectile body named the vaginal bulb, the posterior 

 and the anterior con^^trictor muscles of the vulva, two 

 muscular ligaments and an external layer of skin. 



ANGEIOLOGY. 



Arteries. — External iliac or crural trunk. — Ex- 

 ternal brancli of the termination of the abdominal 

 aorta, running obliquely downwards, backwards and 

 outwards to be continued by the femoral. Its collat- 

 erals are the small testicular or uterine (see page 171) 



