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Foundations · AnatomyFoundations / Anatomy
Male Urethra Anatomy
The male urethra runs bladder-to-meatus in four segments — prostatic (widest, verumontanum), membranous (shortest, external striated sphincter), bulbar, and penile (spongy) — sharing the internal pudendal blood supply with the penis.
Orientation
The big picture
The male urethra is divided into four segments along its course from the bladder to the external meatus: prostatic, membranous, bulbar, and penile (spongy).
Golden rule
Prostatic = widest and most dilatable (verumontanum, ejaculatory ducts); membranous = shortest and least dilatable (external striated sphincter).
Pathophysiology
Mechanism pathway
Tap any step to see why it happens.
Illustration
