Ovarian /Endometrial cycles Follicular Luteal phase hase GOOO8 62 2 Estrogens Progesterone Secretion Menses Proliferation eases O Days 3-5 14 28 3-5
Ovarian /Endometrial cycles
大脑皮层 下丘脑 垂体 H IU/L∴…FSH 100 LH 50}P En μg/L 800 垂体激素40}80 30F60 600 20F40 400 卵巢激素10F20 200 FSH 卵巢周期 @ 图2-7下丘脑垂体卵巢轴在月经周期中的变化
The normal menstrual cycle Menstruation is triggered by a sudden decrease in progesterone and estrogen secretions After menstruation. the increased secretion of estrogen causes cellular growth and the regeneration of the endometrium After ovulation, the secretion of progesterone stops the growth of the endometrium, turning the proliferative phase into the secretory phase If conception does not occur, the corpus luteum(5p regresses causing declines in estrogen and progesterone production, thus the next menstruating begins
The normal menstrual cycle • Menstruation is triggered by a sudden decrease in progesterone and estrogen secretions. • After menstruation, the increased secretion of estrogen causes cellular growth and the regeneration of the endometrium. • After ovulation, the secretion of progesterone stops the growth of the endometrium, turning the proliferative phase into the secretory phase. • If conception does not occur, the corpus luteum (黄体) regresses causing declines in estrogen and progesterone production, thus the next menstruating begins
Classification Anovulatory bleeding(无排卵性DUB) DUB that occurs without ovulation Ovulatory bleeding(排卵性DUB) DUB that involves ovulation
Classification • Anovulatory bleeding (无排卵性DUB) DUB that occurs without ovulation • Ovulatory bleeding (排卵性DUB) DUB that involves ovulation
Anovulatory bleeding
Anovulatory bleeding