How the Foreskin Works

This shows a man's foreskin being retracted passively, as for cleaning. The action in erection and intercourse is similar (without the wrinkling).

Key Foreskin retraction animation

Circumcision destroys this whole extraordinary structure and function. It always removes most of the nerve-packed ridged band, and often all of it.

Videos (flv) of a real foreskin being retracted in a similar way

Thanks to Richi for providing these.

Functions of the foreskin
Reasons not to circumcise
Short answers on circumcision
Offsite: a video illustrating retraction, replacing and the frenulum, from the front and the side

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