Question

Explain the following phases in the menstrual cycle of a human female:
A. Menstrual phase
B. Follicular phase
C. Luteal phase

Answer 1

Hint:The regenerative or reproductive organs of female primates go through cadenced changes called as the period. The normal cycle in human females is around 28-29 days. The beginning of the monthly cycle at adolescence is known as menarche. It includes four stages: Menstrual, follicular, ovulatory and luteal.

Complete answer:
Menstrual phase: It is the first phase of menstrual feminine cycle which happens for 3-5 days. The endometrial coating of the uterus separates during this stage. The unfertilized ovum, just as the veins, are released from the vagina. It prompts the stomach squeezes because of the compression of the uterus and muscular strength. Estrogen and progesterone levels are low during day 1 of feminine stage which invigorates the pituitary organ to discharge FSH for follicular development.
Follicular phase: The follicular stage, also called the preovulatory phase or proliferative phase, is the period of the estrous cycle during which follicles in the ovary develop from primary follicle to a completely developed graafian follicle. It closes with ovulation.
Luteal phase: The luteal phase is the second half phase of menstrual feminine cycle. It begins after ovulation and finishes with the main day of your menstruation. When the follicle has delivered its egg, the egg goes down the fallopian tube, where it might interact with sperm and be fertilized.

Note:- During mid-cycle, there is fast discharge of LH hormone which causes LH surge leading to the rupture of Graffian follicle hence delivering the ovum by ovulation. During ovulation, just the egg emerges from the follicle while the remaining burst follicle stays on the outside of the ovary. Inside about fourteen days the follicle gets changed into a structure known as corpus luteum, it discharges progesterone and modest quantities of estrogen, the two of which keep up the thickening of the walls of the uterus for implantation. On the off chance that pregnancy happens, the significant levels of progesterone are kept up and in the event that pregnancy doesn't happen, at that point the corpus luteum wilts away on day 22. There is a drop in progesterone level and mass of the uterus lining tumbles off prompting feminine cycle.