Question

Ovulation occurs under the influence of

• A. LH (Luteinizing hormone)
• B. FSH (Follicle-stimulating hormone)
• C. Estrogen
• D. Progesterone

Answer 1

The correct option is A LH (Luteinizing hormone)

Ovulation is the process of release of a mature egg from the ovary. In humans, ovulation occurs about midway through the menstrual cycle after the follicular phase (generally on the 14th day of 28-day cycle) which takes place under the influence of follicle stimulating hormone. It is one of the gonadotrophic hormones which is released by the pituitary gland into the bloodstream. In women, this hormone stimulates the growth of ovarian follicles in the ovary before the release of an egg from one follicle at ovulation and also stimulates a number of follicles to develop and start to produce the hormone oestrogen. LH (luteinizing hormone) increases rapidly just before ovulation occurs which is called as LH surge under the influence of oestrogen. The corpus luteum develops from an ovarian follicle during the luteal phase of the menstrual cycle, following the release of a secondary oocyte from the follicle during ovulation. The LH hormone stimulates the formation of corpus luteum. LH is necessary to maintain luteal function for the second two weeks of the menstrual cycle. Thus, the correct answer is option A.