Why must the testes descend into the scrotum during prenatal development?

Why must the testes descend into the scrotum during prenatal development?

This is because the testes don’t pass down from the belly into the scrotal sac until month 7 of a baby’s growth in the uterus. Other causes may include hormone problems or spina bifida. It may be caused by a reflex that causes a testicle to move up and down from the scrotum back into the groin (retractile testes).

What will happen if the testes do not descend into the scrotum bilateral cryptorchidism and remain in the abdomen?

Complications. If a testicle does not descend, its temperature can rise high enough to cause a low sperm count or poor sperm quality. Testicular cancer is another complication of an undescended testicle, though the risk is lower than 1 percent.

Why failure of testes descend into scrotum causes sterility?

Testes require temperature lower than the body temperature to produced sperms. Failure to descend into scrotum does not provide required temperature for sperm production as temperature of the lower abdominal region is not compatible for it. Thus it produces sperm infertility that is sterility.

Why does failure of testes descend into scrotum produce sterility?

What happens if the testes fail to descend?

Sometimes, one testis or both testes fail to descend, which is called undescended testis or undescended testicle. Undescended testicle is a birth defect that occurs in as many as 3% of boys, making it one of the most common birth defects seen. It is more common in premature infants than those born at full term.

Which term means the failure of the testes to descend into the scrotum?

Overview. An undescended testicle (cryptorchidism) is a testicle that hasn’t moved into its proper position in the bag of skin hanging below the penis (scrotum) before birth.

Why do testes fail descend?

This can occur when a testicle is drawn up into the body due to a hyperactive muscle that is attached to the testicle. When the muscle contracts, it pulls the testicle up into the groin area, and when it relaxes, the testicle will descend again.

Why do testes fail?

Causes include: Certain medicines, including glucocorticoids, ketoconazole, chemotherapy, and opioid pain medicines. Diseases that affect the testicle, including hemochromatosis, mumps, orchitis, testicular cancer, testicular torsion, and varicocele. Injury or trauma to the testicles.

Why would it be an advantage to leave the ovaries intact quizlet?

Why would it be an advantage to leave the ovaries intact? keeping the ovaries intact allows a hormonal balance in the female to continue.

Why would it be an advantage to leave the ovaries intact?

Muscle and fat cells convert testosterone and androstenedione into more estrogen, which helps protect against heart disease and osteoporosis. The incidence of heart disease and osteoporosis has been shown to be lower in women who have intact ovaries than women who have had their ovaries removed.

Why would it be an advantage to leave the ovaries intact after a hysterectomy?

Of women who have a hysterectomy, about half of them have their ovaries removed at the same time. The main reason doctors recommend removing the ovaries along with the uterus is to reduce the risk of ovarian cancer. Studies show that if you are at high risk, surgery greatly lowers your risk.