448 LABORATORY MANUAL OF HUMAN ANATOMY 



Clitoris. 



The sutures inserted to close the vulvar cleft may now be 

 removed. Remove the mucous membrane from the clitoris, 

 leaving intact any vessels and nerves found. Study 



(a) Crura of clitoris (crura clitoridis). Determine exactly their attach- 



ments. 



(b) Body of clitoris (corpus clitoridis). 



(ba) Cavernous bodies of clitoris (corpora cavernosa clitoridis). 



(bb) Septum of cavernous bodies (septum corporum caverno- 



sorum). 

 (be) Fascia of clitoris (fascia clitoridis) . 



(c) Glans of clitoris (glans clitoridis). Note that the glans is not a part 



of the corpora cavernosa, but that it is quite independent of these 

 bodies. 



Urogenital Diaphragm or Trigone (Diaphragma [s. Trigonum] uro- 



genitale). 



Remove the crura clitoridis from their bony attachments, 

 avoiding injury to the vessels and nerves in relation to them, 

 and study the "urogenital diaphragm. " (Vide Spalteholz, Figs. 

 673-675.) Make use of models to complete the study. Ex- 

 amine 



(a) Inferior fascia of urogenital diaphragm 1 (fascia diaphragmatis uro- 

 genitalis inferior] (0. T. anterior layer of triangular ligament). 



Cautiously remove this inferior layer of fascia and study 

 the contents of the ' ' middle perineal compartment, ' ' as follows : 



Muscles. 



(a) Deep transverse muscle of perineum (M. transversus perinei pro- 



fundus). 



(b) Sphincter muscle of membranous urethra (M. sphincter urethrae 



membranaceae) . 



Arteries. (Vide Spalteholz, Fig. 474.) 

 (a) Artery of clitoris (A. clitoridis). 



(aa) Artery of bulb of vestibule (A. bulbi vestibuli [vaginae]). 



(ab) Urethral artery (A. urethralis). 



(ac) Deep artery of clitoris (A. profunda clitoridis). 



(ad) Dorsal artery of clitoris (A. dorsalis clitoridis). 



Note that the two latter are given off after the A. cli- 

 toridis has pierced the inferior fascia of the urogenital 

 diaphragm. Find the internal pudendal veins (Vv. pu- 

 dendae internae). 



1 Sometimes called the " fascia trigoni urogenitalis inferior." 



