Length of the female urethra -
2cm
4cm
6cm
8cm
Urethra
-        Length
o   Male - 20 cms
o   Female - 4 cms
-        Shortest part of the male urethra - Membranous part
-        The longest part of the male urethra - Penile urethra
-        Location of sphincter urethrae - Membranous part
-        Prostatic urethra
o   Widest part
o   Most dilatable part
o   Concave anteriorly.
o   Route- downwards & forwards. Exit prostate slightly anterior to its apex.
o   Crescentic on the cross section
o    Structures on the posterior wall
§  Urethral crest
§  Colliculus seminalis (verumontanum)
§  Opening of ejaculatory ducts
§  Prostatic sinuses with the opening of prostate glands
o   Lymphatics
§  Membranous part - Internal iliac nodes
§  Prostatic part - Internal iliac nodes
§Penile urethra - Deep inguinal nodes.