Which one of the following is the correct matching of the events occurring during menstrual cycle?
Correct answer: D. Secretory phase : Development of corpus luteurn and increased secretion of progesterone
- A. Menstruation : Breakdown of myometrium and ovum fertilized
- B. Proliferative phase: Rapid regeneration of myometrium and maturation of Graffian follicle
- C. Ovulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone
- D. Secretory phase : Development of corpus luteurn and increased secretion of progesterone
Explanation
The secretory phase is the phase of the menstrual cycle that follows ovulation. After ovulation, the empty ovarian follicle becomes the corpus luteum, which secretes progesterone. The secretory phase is characterized by increased secretion of progesterone to prepare the endometrium for embryo implantation.
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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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