Shaft skin

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Shaft skin is the skin which covers and protects the parts of the penis shaft. The shaft skin is part of the epithelium of the penis. The shaft skin incorporates a layer of muscle fiber called the Dartos.

The Dartos is not attached to the underlying Buck's fascia, so there is a very high degree of mobility allowing gliding action.

In humans and some other mammals parts of the shaft skin become covered with pubic hair at puberty.

Note: The male foreskin is no part of the penile shaft skin but a separate "organ" which covers and protects the glans penis. The shaft skin, the foreskin and the preputial mucosa build the epithelium of the penis.