The Menstr

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The Menstrual Cycle The menstrual cycle is a monthly series of changes a woman's body undergoes to prepare for potential pregnancy. It typically lasts about 28 days but can range from 25 to 35 days. During this cycle, one egg is produced, and the uterine lining (endometrium) is prepared to accept and support a fertilized embryo. •Menstrual Cycle The cycle involves synchronized, recurring changes in the endometrium of non-pregnant women. It begins with the maturation of an ovum (egg) inside a follicle in the ovary. From day 1 to day 5, the uterine lining breaks down and passes out with the unfertilized ovum, marking menstruation. Between days 6 and 13, the lining rebuilds under the influence of oestrogen, which stimulates its growth. On day 14, ovulation occurs—the release of a mature egg. From day 15 to day 28, the uterine lining remains thick and spongy, ready to receive a fertilized ovum. •Ovary and Ovulation A section through a human ovary shows an ovum surrounded by follicle cells. The ovum develops inside the follicle until it matures. When mature, the follicle bursts, releasing the ovum into the oviduct. The remaining follicle transforms into the yellow body (corpus l...