Changes

The [[ridged band]] is a ring of deeply corrugated or ridged mucous membrane lining the tip of the prepuce. When the prepuce is retracted, the main part of the [[ridged band]] lies across the top and sides of the shaft of the penis. On the underside of the penis, the ridged band merges into the [[frenulum]] of the prepuce. [[Stretching ]] of the accordion-like ridged band triggers important sexual reflexes and erogenous sensation.

The outside of the foreskin is sensitive to light touch. This sensitivity transmits important information on the general environment of the [[penis]] to the brain. The inside layer of the foreskin, especially the [[ridged band]], transmits impulses to the spinal cord which, in turn, transmits impulses to the penis and to the muscle responsible for ejaculation. This is a spinal reflex and, hence, the ridged band is reflexogenic as well as touch-sensitive. The main stimulus to reflex activity appears to be [[stretching ]] of the ridged band.