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The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
A
Providing a secondary sexual feature for exhibiting the male sex
B
Maintaining the scrotal temperature lower than the internal body temperature
C
Escaping any possible compression by the visceral organs
D
Providing more space for the growth of epididymis
Detailed Solution
Spermatogenesis requires a temperature slightly lower than the normal internal body temperature.
The scrotum keeps the testes outside the abdominal cavity and helps in maintaining their temperature about 2–2.5 $^\circ C$ lower than the internal body temperature.
At the normal body temperature of the abdomen, sperm formation would be impaired.
The other suggested purposes (display of sex, avoiding compression, space for the epididymis) are not the reason for this position.
Hence the purpose is maintaining the scrotal temperature lower than the internal body temperature.
The scrotum keeps the testes outside the abdominal cavity and helps in maintaining their temperature about 2–2.5 $^\circ C$ lower than the internal body temperature.
At the normal body temperature of the abdomen, sperm formation would be impaired.
The other suggested purposes (display of sex, avoiding compression, space for the epididymis) are not the reason for this position.
Hence the purpose is maintaining the scrotal temperature lower than the internal body temperature.