Multiple choice

Which among the following statements does NOT characterise normal menstrual cycle in females?

  1. Estrogen builds up the lining of the uterus.

  2. Progesterone secretion decreases after ovulation.

  3. A drop in progesterone causes the lining to break down.

  4. The menstrual cycle is from day 1 of bleeding to day 1 of the next time of bleeding.

  5. About once a month, the uterus grows a new lining to get ready for a fertilised egg.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Progesterone secretion increases after an ovary releases an egg (ovulation) at the middle of the cycle. This helps the estrogen keep the lining thick and ready for a fertilised egg.

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