Which one of the following is the most likely root cause why menstruation is not taking place in regularly…
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?
Retention of well-developed corpus luteum
Fertilization of the ovum
Maintenance of the hypertrophical endometrial lining
Maintenance of high concentration of sexhormones in the blood stream
Solution
When fertilization occurs, the fertilized egg (embryo) releases human chorionic gonadotropin (hCG), which prevents the degeneration of the corpus luteum. As a result, the corpus luteum continues to secrete progesterone, which maintains the endometrial lining and prevents menstruation. Menstruation does not take place during pregnancy because the hormonal environment is altered to support the developing fetus.