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Why does failure of testes to descend into scrotum produce sterility?

Question

Why does failure of testes to descend into scrotum produce sterility?

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Solution

The testes, or testicles, are normally located in the scrotum, which is a pouch of skin located outside the male body. This is important because the process of sperm production, known as spermatogenesis, requires a temperature that is slightly lower than the normal body temperature.

  1. If the testes fail to descend into the scrotum (a condition known as cryptorchidism), they remain in the body cavity, where the temperature is higher.

  2. This higher temperature disrupts the process of spermatogenesis, leading to a decrease in the production of viable sperm.

  3. Without a sufficient quantity of viable sperm, a man's chances of successfully fertilizing a female's egg and causing a pregnancy are greatly reduced, leading to sterility.

  4. In addition, undescended testes are at a greater risk for developing testicular cancer and can lead to other complications such as testicular torsion (twisting of the testes), which can also affect fertility.

So, the failure of the testes to descend into the scrotum can lead to sterility due to the disruption of normal sperm production and increased risk of complications.

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