15' -16 /17 118 



Fig. 83. DISSECTION OF THE PERINEUM, MUSCLES OF THE TRIANGLE REMOVED 

 AND THE CRURA TURNED TO ONE SIDE. i, Corpus spongiosum. 2, Corpus caver- 

 nosum. The crus is cut away from its attachment and turned to the side. 3, Bulb of 

 the corpus spongiosum. 4, Arterial branch to the corpus spongiosum. 5, Artery of 

 the bulb. 6, Internal pudic artery. 7, Tuberosity of the ischium. 8, Dorsal artery of 

 the penis. 9, Artery to the corpus cavernosum. TO, Fascia lata. n, Internal pudic 

 artery. 12, Compressor urethrse muscle (the deep transversus perineae). This muscle 

 is thin and not easily demonstrated in a photograph. 13, The superficial perineal 

 nerves turned outward. 14, Inferior hemorrhoidal vessels and nerve. 15, Levator 

 ani muscle. 16, Sphincter ani. 17, Anus. 18, Gluteus maxiinus. 



