Editing Genitourinary system (section)

=== Urethra ===

==== Female Urethra ====
The urethra of an adult human female is 3-4 cm long.<ref name=":0">{{Cite journal |last=Abelson |first=Benjamin |date=22 October 2018 |title=Sex differences in lower urinary tract biology and physiology |journal=Biology of Sex Differences |volume=9 |issue=1 |page=45 |doi=10.1186/s13293-018-0204-8 |doi-access=free |pmid=30343668 |pmc=6196569 }}</ref> The female urethra is located between the bladder neck to the external urethral orifice and is behind the symphysis pubis.<ref name=":0" />The urethral wall is composed of an inner epithelial lining, a sub-mucosa layer containing vascular supply, a thin fascial layer, and two layers of smooth muscle.<ref name=":0" />

==== Male Urethra ====
The urethra of an adult human male is 18-20 cm long. <ref name=":0" />It has a diameter of 8-9 mm.<ref name=":0" />The male urethra is divided into two sections.