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Why are the testes located **outside** the abdominal cavity in the scrotum?
ATo increase blood supply
BTo maintain a temperature 2–3 °C lower than body temperature, required for spermatogenesis
CTo allow muscular protection
DBecause they cannot develop inside the abdomen
Answer & Solution
Correct answer: B. To maintain a temperature 2–3 °C lower than body temperature, required for spermatogenesis
Spermatogenesis requires temperatures 2–3 °C below normal body temperature. The cremaster and dartos muscles adjust scrotum height to fine-tune testicular temperature. Failure of descent into the scrotum (cryptorchidism) leads to sterility.
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