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
Gray's subject #258 1237
Precursor urogenital folds
Dorlands/Elsevier r_03/13554823

The perineal raphe extends from the anus, through the mid-line of the scrotum (scrotal raphe) and upwards through the posterior mid-line aspect of the penis (penile raphe).

It is observed as a noticeable line.

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.

The resulting ridge of tissue is evident as the perineal raphe.

Stages in the development of the external sexual organs in the male and female.

 This anatomy article is a stub. You can help Wikipedia by expanding it.
v • d • e
Male reproductive system
Scrotum layers (skin, Dartos, External spermatic fascia, Cremaster/Cremasteric fascia, Internal spermatic fascia) • Perineal raphe • Spermatic cord
Testes layers (Tunica vaginalis, Tunica albuginea) • Appendix • Mediastinum • Lobules • Septa • Leydig cell • Sertoli cell • Blood-testis barrier
Spermatogenesis Spermatogonium • Spermatocytogenesis • Spermatocyte • Spermatidogenesis • Spermatid • Spermiogenesis • Spermatozoon
seminal tract Seminiferous tubules (Tubuli seminiferi recti, Rete testis, Efferent ducts) • Epididymis  (Appendix) • Vas deferens (Ampulla) • Ejaculatory duct
urinary tract Internal urethral orifice • Urethra (Prostatic, Intermediate, Spongy, Navicular fossa) • External urethral orifice
accessory glands Seminal vesicles  (Excretory duct of seminal gland) • Prostate  (Urethral crest/Seminal colliculus/Prostatic utricle/Ejaculatory duct, Prostatic sinus/Prostatic ducts) • Bulbourethral glands
Penis root (Crus, Bulb, Fundiform ligament, Suspensory ligament) • body (Corpus cavernosum, Corpus spongiosum) • glans (Foreskin, Frenulum, Corona) • fascia (superficial/subcutaneous, deep/Buck's) • Tunica albuginea - Septum of the penis
Retrieved from "http://en.wikipedia.org/wiki/Perineal_raphe"
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