416 A MANUAL OF ANATOMY. 



The Corpora Cavernosa. Figs. 82, 83. 



Each corpus consists of a cylindrical tube of dense fas- 

 cia (tunica albuginea) containing erectile tissue. It is 

 pointed at both ends, the anterior being short and imbedded 

 in the substance of the glans, the posterior longer, more 

 slender, and tapering, and being attached firmly to the inner 

 margin of the ramus of the pubes and ischium. This por- 

 tion of the corpus cavernosum is called the crus penis. 



The artery of the crus enters it close to its bony attach- 

 ment, and runs through its centre to the anterior extremity, 

 giving off in its course numerous branches to the erectile 

 tissue. The vein of the crus emerges where the artery 

 enters, and is continued posteriorly under the name of the 



Internal Pudic Vein, q. v., page 413. 



The two crura are separated below, where they are 

 fastened to the pubic arch, and at their anterior extremity, 

 where they terminate in the glans, but the intervening 

 portion is firmly united by an envelope of fascia in addition 

 to their own proper sheaths. 



When the crura are cut apart the line of division shows 

 numerous transverse striations, called the septum pec- 

 tiniforme. 



Anterior Portion of the Triangular Ligament. See page 



403. 



DISSECTION. 



Remove what is left of the anterior layer of the triangular ligament. Ex- 

 pose the compressor urethrse, Cowper's glands, the deeper branches of the 

 internal pudic artery and nerve. 



Compressor Urethrse. (Deep Transverse Perincei.) Fig. 



83- 

 Origin. From the inner margin of the rami of the 



ischium and pubes. 



Insertion. Into a median raphe. 



