The first phase of the menstrual cycle is

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Quizplus · Accepted Answer

The first phase of the menstrual cycle is the follicular phase, during which the follicles in the ovaries mature in response to hormones such as follicle-stimulating hormone (FSH). This phase typically lasts around 14 days, but can vary in length. Ovulation occurs at the end of the follicular phase, when the mature follicle releases an egg. After ovulation, the luteal phase begins, during which the empty follicle transforms into the corpus luteum and produces progesterone to prep the uterus for possible pregnancy. If pregnancy does not occur, the corpus luteum degenerates and the menstrual cycle starts over again with the follicular phase. Menstruation occurs at the end of the luteal phase if pregnancy does not occur.

The First Phase of the Menstrual Cycle Is