Penile raphe

Line of tissue on the human penis

The penile raphe is a visible line or ridge of tissue that runs on the ventral (urethral) side of the human penis beginning from the base of the shaft and ending in the prepuce between the penile frenulum. The line is typically darker than the rest of the shaft skin, even though its shape and pigmentation may vary greatly among males. The penile raphe is part of a broader line in the male reproductive organs, that runs from the anus through the perineum and continues to the scrotum and penis, collectively referred to as median raphe. The penile raphe along with the skin between it are homologous to the female labia minora.

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