In a regular 28 day menstrual cycle, ovulation usually occurs on about day
Correct answer: D. 14
- A. 5
- B. 8
- C. 21
- D. 14
Explanation
Ovulation falls near the midpoint of the cycle, roughly fourteen days before the next period begins, because the luteal phase is the fixed part at about fourteen days while the follicular phase varies. Day five is still within menstruation and day twenty one lies in the secretory phase, when the corpus luteum is already active. Counting backwards from the next expected period is the more reliable method in irregular cycles.
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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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