Luteal phase Follows ovulation through next 28 days Ebbs and flow of LH, FSH, HCG Menstruation Cycle - initiated by hypothalamus & endocrine glands 3 Phases Menstrual phase sheds uterine lining Proliferative phase ? ovulation occurs Secretory phase ? LH cause cells to develop Prepares uterus for fertilized egg Cervical mucus plug emerges In no fertilization occurs: corpus luteum begins to degenerate progesterone level fall endomentrial cells begin to die Menstruation ? sloughing off of uterine lining first is called ?menarche? (11-15) menopause (45 & 55) lasts between 2-6 days cycle 26 to 42 days, ovulation at 14 days before next cycle menstrual synchrony Menopause premenopausal ? begin at 40 - up to ten years cycles become irregular, hot flashes Menopause ? stopping of menstruation Hormone-replacement Therapy (HRT) ? replacement estrogen and progesterone reduce osteoporosis ? bone loss Problems PMS ? bloating, pain, breast swelling, irritability, mood swings premenstrual dysphoric disorder dysmenorrhea ? painful cramps overproduction of prostaglandins ? chemicals that cause muscle contraction amenorrhea ? absence of menstruation primary ? doesn?t begin at puberty secondary ? no menstruation for 3 months Menorrhagia Heavy or prolonged bleeding causes hormonal imbalances having an IUD cancer certain medications Toxic Shock Syndrome fever, sore throat, nausea
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