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In human males, why are testes present outside the abdominal cavity in a pouch called scrotum?

AIt secretes hormones for sperm formation

BIt helps in maintaining temperature 2-3 degrees lower than the body for sperm formation

CIt is richly supplied by blood vessels needed for sperm formation

DIt helps in maintaining low pressure than the body for sperm formation

Answer:

B. It helps in maintaining temperature 2-3 degrees lower than the body for sperm formation

Read Explanation:

  • The scrotum maintains a temperature 2-3 degrees Celsius lower than the body temperature, which is essential for healthy sperm production.

  • In mammals, the testis temperature must range from 2 to 8°C below body temperature to ensure successful spermatogenesis .

  • The lower temperature is maintained by a cooling system comprising the scrotum, pampiniform plexus, and muscles.


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