1. Epididymis
  2. Seminiferous tubules of testis
  3. Glans penis
  4. Prepuce
  5. Corpus cavernosa
  6. Corpus spongiosum
  7. Spongy/penile urethra
  8. Urogenital diaphragm
  9. Membranous urethra
  10. Prostate gland
  11. Prostatic urethra
  12. Ejaculatory duct
  13. Anus
  14. External anal sphincter
  15. Internal anal sphincter
  16. Anal canal
  17. Rectum
  18. Sigmoid colon
  19. Rugae within urinary bladder
  20. Detrusor muscle
  21. Internal urethral sphincter
  22. Internal urethral orifice
  23. External urethral orifice
  24. Ureter