Which statement about the male reproductive system is true?

Question

Quizplus · Accepted Answer

The testes of most mammals, including humans, are located outside the body cavity in the scrotum. This is because the optimal temperature for spermatogenesis is slightly lower than normal body temperature, and the scrotum provides a cooler environment.

Answer: D
 When temperatures rise, scrotal muscles contract, moving the testes away from the body to help maintain the temperature needed for spermatogenesis. Conversely, when temperatures are cold, the scrotal muscles relax and allow the testes to move closer to the body for warmth.

Answer: E
 Semen is a mixture of sperm and secretions from the prostate gland, seminal vesicles, and bulbourethral glands. While sperm make up a significant portion of semen volume, they only make up approximately 5% of the total volume. The remaining 95% is made up of fluids and secretions from these accessory gland.

Which Statement About the Male Reproductive System Is True