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The body of the penis consists of three cylindrical-shaped masses of erectile tissue which run the length of the penis. Two of the masses lie alongside each other and end behind the head of the penis. The third mass lies underneath them. This latter mass contains the [[urethra]]. The penis terminates in an oval or cone-shaped body, the [[glans penis]], which contains the exterior opening of the [[urethra]].<ref name="farlex2003" />
The normal [[intact]], [[foreskinned]] penis is enveloped in a tube of loose, highly innervated, movable, erogenous skin, the [[foreskin]] or prepuce, which enables it to expand freely during [[erection]].<refname="earp2018">{{REFjournal
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