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月经生理MENSTRUATION定义nMENARCHEn DURATIONnMENSTRUAL PERIODnLMP last menstrual periodnPMP preceding menstrual periodOVARY CYCLEn胚胎6-12周,原始性腺发育n胚胎20周,始基卵泡600-700万个,出生时200万个,青春期30万个,成熟排卵400-500个n胚胎9周,副中肾管,n8岁开始GnRH影响,卵泡发育FOLLICLESECONDARY FOLLICLESECONDARY FOLLICLEENDOMATRIUMPROLIFERATIVE PHASESECRETORY PHASEnH-P-O hypothalam-pituitary-ovarynGnRH gonadotrophin-releasing hormonenFSH follicle stimulating hormonenLH luteinizing hormonenP progestinnE estrogennA androgenPROGESTINESTROGENMENATRUATION