ABDOMEN AND PELVIS 445 



(m) External orifice of urethra (orificium urethrae externum). 



(n) Hymen (hymen [femininus]}. 



(o) Hymenal caruncles (carunculae hymenales). 



Notice the characteristics of the external genitalia in differ- 

 ent subjects. How do the nulliparous differ from the multi- 

 parous! Note the homologies existing between the female and 

 the male genitals and tabulate these in your drawing-books. 



Praeputium clitoridi 



Glans clitoridis 



Frenulum clitoridis 



Labium minus pudendi 



Vestibulum vaginae-- 



Carunculae hymenales"=- 



Opening of the glandula -'? 

 vestibularis major 



Fossa navicularis (vestibuli 

 vaginae) 



^ 

 Frenulum labiorum pudendi * 



-Commissura labiorum anterior 



^Labium ma jus pudendi 



, Ductus para-urethralis 



Orificium urethrae 

 externum 



-Carina urethralis 

 (vaginae) 



Columna rugarum anterior 

 "Orificium vaginae 



Columna rugarum posterior 



Commissura labiorum posterior 



The female external genitalia. The labia majora have been drawn apart and the pudendal cleft 

 thereby opened wide. (After Toldt, Anat. Atlas, Wien, 1900, 2 Aufl., p. 498, Fig. 855.) 



Distend the rectum with cotton and close the anal and vulvar 

 orifices by sutures. Make the following incisions (cf. Fig. 221) : 



(1) A transverse incision passing from the tuber ischiadicum of one side 



to that of the other. 



(2) An incision in the median line encircling the labii majora and the 



anal orifice, passing from the mons pubis in front to the tip of the 

 coccyx behind. 



Reflect the four flaps. 



Superficial Perineal Fascia (Fascia perinei superficialis) and Con- 

 tents of " Superficial Perineal Compartment." 



Note the general characteristics of this fascia and compare it 

 with the fascia in the male. Note the two layers, superficial and 

 deep. Determine the exact disposition of each. What is the 



