Question

what is follicular
and luteal ​

Answer 1

Answer:

They are the steps of menstrual cycle in females.

Explanation:

Follicular Phase

This phase starts just after menstruation and ends up with the release of ovum.It lasts 07 days (day 6 to 12). This stage stimulates the development of many follicles in the ovary. Only one follicle, however, matures to produce an egg. This egg-producing follicle is sometimes callef 'graafian follicle". The rest of the follicles do not develop and ultimately degenerate. This process is initiated by the FSH (Follicls Stimulating Hormone) secreted in blood from pituitary gland. FSH stimulates ovary to produce a hormone of its own, called estrogen from degenerating ovarian follicles. Estrogen affects the pituitary on one hand to inhibit secretion of FSH level and high estrogen level in the blood initiate the secretion of another hormone LH (Lutenizing hormone) from the pituitary gland.

Corpus Luteum Phase(Luteal Phase):

This is the longest period of menstrual cycle and lasts about 12-14 days (day 16 to 28). It is so called because LH causes the ruptured follicle to change a yellowish body, the corpus luteum, which starts producing another hormone the progestrone. Progestrone maintains and enhances the growth of the mucous lining (endometrium) of the uterus. If the mature ovum, now in oviduct is not fertilized the corpus luteum gradually degenerates, progestrone secretion stops and the internal lining of uterus disintegrates and sloughs off with blood, menstruation begins and the cycle starts again.

Remember before follicular phase there is menstruation phase and between follicular and luteal phase there is ovulation phase.