Membranous urethra

Membranous Urethra

The Membranous Urethra (pronunciation: mem-bray-nus yoo-ree-thra) is a part of the male urethra that extends from the prostatic urethra to the spongy urethra. It is the shortest, least dilatable, and most fixed part of the urethra.

Etymology

The term "Membranous Urethra" is derived from the Latin word 'membrana' meaning 'skin' or 'membrane', and the Greek word 'ourethra' meaning 'urinary canal'.

Anatomy

The Membranous Urethra is approximately 1-1.5 cm long and is surrounded by the urethral sphincter, a muscle that controls the flow of urine from the bladder. It is located in the deep perineal pouch in males.

Function

The primary function of the Membranous Urethra is to transport urine from the bladder to the outside of the body. It also plays a role in the ejaculation of semen during sexual intercourse.

Related Terms

• Urethra
• Prostatic Urethra
• Spongy Urethra
• Urethral Sphincter
• Perineal Pouch

See Also

• Urinary System
• Male Reproductive System

External links

• Medical encyclopedia article on Membranous urethra
• Wikipedia's article - Membranous urethra

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