D.Urethra

• Male urethra


  • About 8 inches / 20 cm long
• Female urethra


  • About 1.5 inch / 3.8 cm long
• Prostatic urethra


  • 1.25 inches / 3 cm long
• Membranous urethra


  • 0.5 inch / 1.25 cm long
• Penile urethra


  • 6 inches / 15.75 cm long
• There's usually no need to memorize the lengths of the different parts of the urethra
• Prostatic urethra


  • Widest & most dilatable part where ejaculatory ducts open into
• Intermediate (Membranous) urethra


  • Narrowest & least distensible
• Spongy urethra


  • Longest & most mobile
• BUCK's FASCIA


  Tubular sheath of fascia enclosing the three erectile tissue in body of penis