During pregnancy, the production of ova in ovary is prevented by
Correct answer: B. Progesterone
- A. Estrogen
- B. Progesterone
- C. Relaxin
- D. Prolactin
Explanation
Progesterone is the hormone that prevents the production of ova during pregnancy. It is produced by the corpus luteum and the placenta, maintaining the uterine lining and preventing further ovulation. Estrogen, while important for preparing the uterus, does not prevent ovulation. Relaxin's role is to loosen pelvic ligaments for childbirth. Prolactin is primarily involved in lactation and only indirectly affects ovulation postpartum.
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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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