About which day in a normal human menstrual cycle does the rapid secretion of LH (popularly called LH surge) normally occur?
Correct answer: A. 14th day
- A. 14th day
- B. 5th day
- C. 20th day
- D. 11th day
Explanation
The correct answer is a) 14th day. In a normal human menstrual cycle, the rapid secretion of LH (luteinizing hormone) surge usually occurs around the 14th day. This surge triggers ovulation, which is the release of a mature egg from the ovary. The LH surge is a crucial event in the menstrual cycle and marks the time when a woman is most fertile.
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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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