In male humans the testes are hanging out of the abdominal cavity through the scrotum sac. This anatomical feature brings a lot of significance in the sperm production by the testes. Sperm always needs a cooler temperature than the core body temperature. This is achieved naturally by the scrotal sac enclosing testes to hang out from the abdominal cavity through muscular structure. This makes the scrotum and penis and external genital organ in males.

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Chapter 27, Problem 6BYGO

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In male humans the testes are hanging out of the abdominal cavity through the scrotum sac. This anatomical feature brings a lot of significance in the sperm production by the testes. Sperm always needs a cooler temperature than the core body temperature. This is achieved naturally by the scrotal sac enclosing testes to hang out from the abdominal cavity through muscular structure. This makes the scrotum and penis and external genital organ in males.

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