III. Ovulation Under the stimulus of FSH /LH:Time:onthe14thdaybeforethebeginningof nextmenstruaiDefinition:TunicaGranulosaMesovarium.andSecondarythe secondaryOocytecellsfolliclebioodvesselsalbugineaCortexPrimaryDegeneratingoocytefolliclescorpusluteum(corpus albicans)Vesicular (Graafian)Germinalfolliclezona pellucidaepitheliumPrimordialAntrumfolliclesOocytecorona radiateZonapellucidaOvarianligamentThecasomefollicularfluidfolliculiCorpusluteumarereleasedintotheOvulatedoocytepelvic cavityCoronaradiataMedullaDevelopingthen captured by(a)corpus luteumoviduct fimbriatedfunnel
Ⅲ. Ovulation Time: on the 14th day before the beginning of next menstruation. Under the stimulus of FSH /LH: Definition: the secondary oocyte + zona pellucida + corona radiate + some follicular fluid are released into the pelvic cavity, then captured by oviduct fimbriated funnel
Afterthe ovulation:degenerateIf it is not fertilized in theS24hIf it is fertilized:Meiosis IISecondary oocytematureovumDAY2uterusDAY1DAY 3-4Finstcleavoge-centago4-cell8-cellstageDAY4ompocledB-cellmorulacomoactedmorula67.DAY5frophectodermOvaryBastocoelEanyDAYOblastocystInnercellmassDAY6-7ZonapellucidaLate-stageblastocyst(natching)DAY8-9EpibiastOocyteImplantationof theblastocysttypoblast
If it is not fertilized in the 24h After the ovulation: degenerate s If it is fertilized: Secondary oocyte Meiosis Ⅱ mature ovum