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→Parts: Wikify.
* Root of the penis (radix): It is the attached part, consisting of the bulb of penis in the middle and the crus of penis, one on either side of the bulb. It lies within the superficial perineal pouch.
* Body of the penis (corpus): It has two surfaces: dorsal (posterosuperior in the erect penis), and ventral or urethral (facing downwards and backwards in the flaccid penis). The ventral surface is marked by a groove in a lateral direction.
* Epithelium of the penis consists of the shaft skin, the [[foreskin]], and the [[preputial mucosa]] on the inside of the foreskin and covering the [[glans penis]]. The epithelium is not attached to the underlying shaft so it is free to [[Gliding action| glide to and fro]].<ref>{{REFweb
|url=http://www.circumstitions.com/completeman/sidegif.gif
|title=How the foreskin works