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The glans penis, or simply the glans, refers to the head of the penis. The glans is usually covered by a hood of folded skin called the [[foreskin]]. The surface of the glans is mucosal tissue that, under normal conditions, is moist and supple. If left uncovered for long periods of time, the surface of the glans begins to dry out. In the [[circumcision|circumcised]] penis, the glans is permanently exposed; the surface of the glans dries out and develops layers of [[keratinization|keratin]] and loses sensation.

The human glans penis has virtually no fine touch sensation and can only sense deep pressure and pain at a high threshold. This was first reported by the inventor of the aesthesiometer,<ref>{{Von (1894)}} | [[Template:Von (1894)|see more]]</p></ref> and led Sir Henry Head to make his famous comparison with the back of the heel.<ref>{{Head (1920)}} | [[Template:Head (1920)|see more]]</p></ref>

"The test group were 1.97 +/- 0.71, 2.64 +/- 1.38, 3.09 +/-1.46 and 2.97 +/- 1.20 respectively before and 1, 2 and 3 months after circumcision, with significant difference between pre- and post-operation (P < 0.05)."(1)

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