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of pubic hair on the scrotum.

Function

The scrotum regulates the temperature of the testicles and maintains it at 35 C, i.e. two or three degrees below the body temperature of 37 C. Higher temperatures affect spermatogenesis. Temperature control is accomplished by the smooth muscles of the scrotum moving the testicles either closer to or further away from the abdomen dependent upon the ambient temperature.

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