DISSECTING MANUAL. 



of Douglas) in its upper fourth of an inch, mesially ; lower down 

 it lies on the rectum, separated by pelvic fascia except near its 

 lower end where a mass of fibrous and fatty tissue (perineum 

 or perineal body) intervenes. At the sides are the Levatores 

 ani and, near the upper part, ureters. The terminal part 

 pierces the triangular ligament, lying between the bulbs of 

 the vestibule, the glands of Bartholin, and the Sphincter 

 vaginae muscle. [1193] 



Structure. It has a muscular coat of longitudinal fibres, 

 with circular fibres in the deeper part at the lower end. 

 The mucous coat is corrugated, with transverse ridges (rugae) 

 and also a slight median longitudinal ridge (columnae ru- 

 garum) on both the anterior and posterior walls; the lower 

 end (carina urethralis) of the anterior column is near the 

 urethra. [1195] 



Vulva or Pudendum. This term comprises the external 

 genital organs, i.e., the labia majora and structures lying be- 

 tween them. [1195] 



Labia Majora. These are two prominent rounded folds of 

 skin, enclosing fatty and areolar tissue. They bound the uro- 

 genital cleft and are narrow behind, toward the anus, and 

 sometimes joined by a transverse fold (posterior commissure) . 

 They increase in size while passing forward and upward to end 

 m a median elevation (mons pubis, mons Veneris, anterior 

 commissure) of similar structure. The outer surfaces of the 

 labia and mons are hairy ; the inner surfaces are smooth and 

 (in virgins) in contact. [1195] 



Labia Minora (nymphse). These are two smaller and nar- 

 rower vertical folds lying between the labia majora; their 

 posterior ends are lost on the labia majora, being joined (in 

 virgins) by a transverse fold (frenulum, fourchette). Each di- 

 vides anteriorly into two portions, outer and inner; the outer 

 portions of both unite over the glans clitoridis as a fold (pre- 

 putium clitoridis) ; the inner portions unite at an acute angle 

 and join the under surface of the glans (frenulum clitoridis). 



[246] 



