GENERAL HISTOLOGY

Detailed explanation-1: -2. The follicular phase. The follicular phase starts on the first day of your period and lasts for 13 to 14 days, ending in ovulation. The pituitary gland in the brain releases a hormone to stimulate the production of follicles on the surface of an ovary.

Detailed explanation-2: -The first day of menses is identified as cycle day one. Estrogen is at a low point. Therefore, the pituitary secretes FSH and LH, a process which actually begins before the onset of your menses. These hormones in turn stimulate the growth of several ovarian follicles, each containing one egg.

Detailed explanation-3: -Follicular Phase (Day 1-14) From the start of your period (day 1) until ovulation, you’re in the follicular phase. This phase is when the uterine lining thickens in preparation for a fertilized egg to be implanted, leading to pregnancy.

Detailed explanation-4: -During the luteal phase, the dominant follicle that released the mature egg changes into a structure called the corpus luteum. The corpus luteum produces important pregnancy hormones. If you don’t get pregnant, the corpus luteum will disappear, and you’ll shed your uterus lining (menstruation).

Detailed explanation-5: -The ovarian cycle consists of three phases: follicular (preovulatory) phase, ovulation, and luteal (postovulatory) phase, whereas the uterine cycle is divided into menstruation, proliferative (postmenstrual) phase and secretory (premenstrual) phase.