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The core body temperature of humans is 37 degrees. A colleague of mine wants to tell her Biology class that the temperature of semen in the testes is slightly lower than this core temperature. Could you please tell what the average (optimum) temperature of semen is when it is in the testes? Thank you.

She is correct, otherwise the semen would be destroyed via the higher temperature. I really don't know the temp, but clearly lower than 37 centigrade.

Dr. Myron

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