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Bulb of penis

Recommended video: Penis and male urethra [12:43]
Structure of the penis and urethra seen on a longitudinal section.

The bulb of the penis comprises the proximal portion, or base, of the penis and is located just above the testes. It appears as a prominent ridge on the body of the penis.

It forms part of the penile root which in turn consists of three cylindrical structures of erectile tissue. These include the penile crura which continue as the corpora cavernosa and the bulb of the penis which narrows to continue as the corpus spongiosum.

This corpus spongiosum is attached to the perineal membrane extending from the perineum to the anus.

The bulb of the penis is composed of a large bundle of connective and muscle tissue and thus contributes to the overall external shape of the penis. The male urethra pierces the deep aspect of the bulb and traverses it as the bulbar urethra until it reaches the tip of the glans. The penile bulb is surrounded by the bulbospongiosus muscle.

The equivalent of the bulb of penis in people with female reproductive organs is the bulb of vestibule.

Blood supply is provided by branches of the internal pudendal artery which include the perineal artery and the artery of the bulb of the penis, while venous drainage is achieved by the internal pudendal vein.

Terminology English: Bulb of penis

: Bulbus penis
Definition The bulb of the penis comprises the base of the penis and is located just above the testicles.

Ready to learn more about the external and internal structure of the penis? Then dive straight into this study unit:

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