In anatomy, the urethra (from Greek οὐρήθρα – ourḗthrā) is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body. In males, the urethra travels through the penis and also carries semen. In human females (and in other primates), the urethra connects to the urinary meatus above the vagina, whereas in non-primates, the female’s urethra empties into the urogenital sinus.[citation needed]

Females use their urethra only for urinating, but males use their urethra for both urination and ejaculation. The external urethral sphincter is a striated muscle that allows voluntary control over urination. The internal sphincter, formed by the involuntary smooth muscles lining the bladder neck and urethra, is innervated by the sympathetic division of the autonomic nervous system. The internal sphincter is present both in males and females.

Endoscopic Urethroplasty
Laser Ablation of Urethral Strictures
Laser-Guided Laser Urethrotomy for Blind Urethral Strictures
Guided Internal Urethrotomy for Blind Urethral Strictures
TUR-ST (Transurethral resection of the urethral stricture)
Endoscopic Balloon Dilation