Question

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

• A. It secretes hormones for sperm formation
• B. It helps in maintaining temperature 2-3 degrees lower than the body for sperm formation
• C. It is richly supplied by blood vessels needed for sperm formation
• D. It helps in maintaining low pressure than the body for sperm formation

Answer 1

Answer:

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

• 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.