Which of the following will happen if fertilization does not occur?
Correct answer: C. Corpus luteum degenerates
- A. Menopause starts
- B. FSH secretion is increased
- C. Corpus luteum degenerates
- D. Progesterone secretion is increased
Explanation
Explanation:If fertilization does not take place corpus luteum degenerates and progesterone levels decrease leading to menstruation and the start of the next cycle.Menopause is a natural process that occurs in women around the age of 50-55, and is characterized by the cessation of menstrual periods due to the depletion of ovarian follicles. Menopause is not directly related to fertilization.FSH secretion is not increased in the absence of fertilization due to negative feedback from the absence of the hormone progesterone.Progesterone secretion is not increased in the absence of fertilization because it is primarily secreted by the corpus luteum, which degenerates if fertilization does not occur
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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About Menstrual Cycle
The menstrual cycle covers the coordinated changes in the ovaries and uterus, including menstruation, follicular growth, ovulation and corpus luteum formation. It links follicle-stimulating hormone, luteinizing hormone, oestrogen and progesterone with endometrial changes, and distinguishes the ovarian cycle from the uterine cycle and the hormonal events of pregnancy.
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