Difference between Menstrual phase and Follicular phase

Menstrual phase and Follicular phase

Menstrual Phase:

Timing: The menstrual phase is the first stage of the menstrual cycle and typically lasts for about 3 to 7 days.

Purpose: This phase marks the shedding of the uterine lining (endometrium) that has built up during the previous menstrual cycle. It is characterized by the actual menstrual bleeding.

Hormone Levels: Hormone levels, particularly estrogen and progesterone, are at their lowest during this phase. This drop in hormone levels triggers the shedding of the uterine lining.

Follicular Phase:

Timing: The follicular phase follows the menstrual phase and can vary in length but generally lasts from about 7 to 21 days.

Purpose: This phase involves the development of ovarian follicles (small sacs) in the ovaries, each containing an immature egg (oocyte). The primary goal of the follicular phase is to prepare an egg for ovulation.

Hormone Levels: Hormone levels, especially estrogen, begin to rise during this phase. As estrogen levels increase, it stimulates the thickening of the uterine lining in preparation for potential embryo implantation.