During the menstrual cycle, which of the following events happens if a released egg does not become fertilised?
Correct answer: D. The lining of the womb wall breaks down.
- A. The lining of the womb wall stays built up.
- B. The lining of the womb wall builds up again.
- C. Another egg is immediately released.
- D. The lining of the womb wall breaks down.
Explanation
If fertilization does not occur, the uterus wall breaks down, menstraution occurs and the body prepares for the next cycle.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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