![]() Glans Penis Morphology - Copyright Amy Cartmel Within the prepuce are varying amounts of striated muscle fibres the cranial prepucial muscles responsible for retracting the prepuce and the caudal prepucial muscles responsible for protracting the prepuce. The prepuce is hairless and contains many smegma secreting glands important for lubrication between the shaft of the penis and the prepuce during copulation. The prepuce is the skin sheath that conceals the penis when it is flaccid and is formed by an invagination of the abdominal skin. The glans penis is highly populated with sensory nerves. For example the boars “corkscrew” glans penis corresponds to the many interdigitating prominences of the sow’s cervix. ![]() There is a great variation in the morphology of the glans penis between species which often correspond to the female tract morphology. At the end of the penis the corpus spongiosum expands over the distal end of the corpus cavernosum to form the Glans penis, bringing the urethra to the extremity of the penis. It commences at the bulb of the penis as an enlargement of the spongy tissue of the pelvic urethra. The corpus spongiosum is a vascular tissue sleeve surrounding the urethra.
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