The corpora cavernosa are situated side by side in the dorsal portion of the penis, and form about two thirds of the bulk of the organ. They are slightly separated anteriorly, where they terminate in blunt, conical extremities; they are widely separated posteriorly, where they commence as the crura of the penis; in the remainder of their extent they are closely united. The corpora cavernosa are composed of erectile tissue, and are enveloped by a strong sheath, the tunica albuginea.

Corpus cavernosum penis