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Corpus Spongiosum of Penis (Right Half)
Urogenital System

Corpus Spongiosum of Penis (Right Half)

Corpus spongiosum penis

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Quick Facts

Location: Shaft of penis.

Arterial Supply: Artery of bulb of penis.

Venous Drainage: Deep dorsal vein of penis.

Innervation: Cavernous nerve.

Lymphatic Drainage: Internal iliac lymph nodes.

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The corpus spongiosum of the penis is an erectile tissue that surrounds the spongy part of the male urethra within the penile shaft. The proximal part of the corpus spongiosum is enlarged to form the bulb of penis. Cavernous spaces in the corpus spongiosum are dilatable spaces that fill with blood during erection.

Anatomical Relations

The corpus spongiosum is located on the ventral surface of the penile shaft, whereas the corpus cavernosum is located on the dorsal surface. The spongy (penile) urethra travels throughout the length of the corpus spongiosum.


Cavernous spaces in the corpus spongiosum fill with blood during erection to prevent the urethra from closing to allow for ejaculation.

Arterial Supply

The corpus spongiosum is supplied by the artery of bulb of penis, which is a branch of the perineal artery.

Venous Drainage

The corpus spongiosum of the penis is drained by the deep dorsal vein of the penis. These veins ultimately drain into the internal pudendal veins.


The cavernous nerve on the dorsum of the penis runs from the prostatic plexus to supply the erectile tissue of the corpus cavernous and corpus spongiosum.

Lymphatic Drainage

The lymph of the corpus spongiosum drains into the internal iliac lymph nodes.

List of Clinical Correlates

—Urethral catheterization

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ScienceDirect image

The corpus spongiosum , which underlies the lamina propria and the epithelial layer of the penile urethra, consists of interconnected, branching vascular spaces that are surrounded by smooth muscle and connective tissue.

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