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Now let us consider whether the operation is in any way harmful or contraindicated. The function of the prepuce is to protect the glans, the latter being almost insensitive to most ordinary tactile and thermal stimuli. It has, however, specific receptors for other pleasurable sensations. Removal of the prepuce exposes the glans to foreign stimuli which dull these special receptors. During the act of coitus the [[uncircumcised]] phallus penetrates smoothly and without friction, the prepuce gradually retracting as the organ advances. In contrast, when the circumcised organ is introduced during coitus, friction develops between the glans and vaginal [[mucosa]]. Penetration in the circumcised man has been compared to thrusting the foot into a sock held open at the top, while, on the other hand, in the intact counterpart it has been likened to slipping the foot into a sock that has been previously rolled up.<ref name="morgan1965">{{REFjournal

The subcutaneous tissue of the glans is provided with special sensory receptors that are concerned with appreciating the pleasurable sensations that occur during coitus. They are stimulated normally only when the glans is exposed. In the circumcised subject these receptors are constantly stimulated and lose their sensitivity. During the act of coitus, the [[uncircumcised]] phallus penetrates smoothly and without friction, the prepuce gradually retracting as the organ advances. In contrast, when the circumcised organ is introduced during coitus, friction develops between the glans and the vaginal [[mucosa]].<ref name="morgan1967">{{REFjournal