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Scrotum acts as a thermoregulator - Just...

Scrotum acts as a thermoregulator - Justify.

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The scrotum is a sac of skin that hangs outside the abdominal cavity. Since viable sperms cannot be produced at normal body temperature, the scrotum is placed outside the abdominal cavity to provide a temperature `2-3^@C` lower than the normal internal body temperature. Thus, the scrotum acts as a thermoregulator for spermatogenesis.
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Scrotum acts as a thermo regulator for spermatogenesis why?

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