Menstrual Cycle Loop
Occur in this order but the length of each stage of the cycle can vary significantly. / 1.The first stage of the Menstrual cycle……is menstruation. / The lining of the uterus breaks down…
…and is expelled with the unfertilised egg. / A common side effect of menstruation…
…is painful cramping in the abdomen. / The Menstrual Cycle begins…
…around the age of twelve. / Menstruation lasts for…
…approximately 5-7days. / FSH stands for Follicle…
…Stimulating Hormone. / It is produced in the…
…pituitary gland. / FSH causes an egg…
…to start maturing from a follicle in the ovaries. / FSH also stimulates the…
…ovaries to produce oestrogen. / Oestrogen stimulates the lining…
…of the uterus to start building up. / It also inhibits the…
…production of FSH. / And stimulates the production…
…of LH from the pituitary gland. / LH stands for…
…luteinising hormone. / When the oestrogen and LH levels…
…peak the egg is released. / This is…
…called ovulation. / The egg starts to…
…travel down the fallopian tube. / Around this time is where…
…fertilisation is most likely to occur. / The egg only lives…
…for approximately 24hrs. / But sperm can survive…
…for several days in the uterus. / The remains of the follicle…
…form a Corpus Luteum. / This releases the final hormone…
…progesterone. / This helps maintain the thick…
…wall of the uterus. / The scientific name for this…
…wall is the endometrium. / If fertilisation occurs…
…the egg implants in the uterus lining. / The Menstrual Cycle…
…ends and pregnancy begins. / If fertilisation does not occur, the levels of…
…progesterone and oestrogen drop. / This causes the lining…
…of the uterus to break down. / The lining and dead egg…
…will be expelled during menstruation. / This will complete the…
…cycle and it will begin again. / The Menstrual cycle occurs…
…until the menopause. / This usually occurs in women…
…between the ages of 45-55. / The sequence of events in the Menstrual Cycle…