Perineal raphe

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Perineal raphe
The perineum. The integument and superficial layer of superficial fascia reflected. (Raphe visible at top.)
The scrotum.
Latin raphe perinei
Precursor urogenital folds
Gray's p.1237
TA A09.5.00.002
FMA 20244
Anatomical terminology

The perineal raphe is a visible line or ridge of tissue on the human body that extends from the anus through the perineum.

In males, this raphe continues through the midline of the scrotum (scrotal raphe) and upwards through the posterior midline aspect of the penis (penile raphe). It is the result of a fetal developmental phenomenon whereby the scrotum (the developmental equivalent of the labia in females) and penis close toward the midline and fuse.

It has been argued that the "rib" in the biblical story of Adam and Eve is actually a mistranslation of a Biblical Hebrew euphemism for baculum (penis bone), and that its removal from Adam in the Book of Genesis is a creation narrative to explain its absence in humans, as well as the presence of the raphe– as a resultant 'scar'.[1]

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  1. ^ Gilbert, S. F.; Zevit, Z. (2001). "Congenital human baculum deficiency: The generative bone of Genesis 2:21-23". American Journal of Medical Genetics 101 (3): 284. doi:10.1002/ajmg.1387.