1. Ureter
  2. Detrusor muscle
  3. Rugae
  4. Internal urethral sphincter
  5. Internal urethral orifice
  6. Prostate gland
  7. Ejaculatory duct
  8. Prostatic urethra
  9. Membranous urethra
  10. Urogenital diaphragm
  11. Corpus spongiosum
  12. Corpus cavernosum
  13. Glans penis
  14. Penile/spongy urethra
  15. External urethral orifice
  16. External anal sphincter
  17. Internal anal sphincter
  18. Anal canal
  19. Anus