17 



Fig. 82. DISSECTION OF THE MALE PERINEUM. Perineal triangle and con- 

 tents. i, Corpus spongiosum. 2, Accelerator urinae (bulhocavernosus). 3, Crus 

 penis (origin of the corpus cavernosus). 4, Erector penis (ischiocavernosus). 5, In- 

 ferior pudendal nerve. 6, Transversus perineae muscle (superficial). 7, Transverse 

 perineal artery. 8, Tuberosity of the ischium. 9, Gluteus maximus. 10, Superficial 

 perineal artery, n, Superficial perineal nerves. 12, Tendinous centre of perineum. 

 13, Anus. 14, Fourth sacral nerve. 15, Tip of coccyx. 16, Sphincter ani. 17, Ischio- 

 rectal fossa and anal fascia. 



