_genital download center女性生殖器下载中心课件

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1、FemaleReproductiveSystemObjectives:Bytheendofthelectureyoushouldbeableto:Describethehistologicalstructureandthefateofovarianfollicles.Describethehistologicalstructureof:Ovary.Oviducts(Fallopiantubes).Uterus.Vagina.Placenta.Restingandlactatingmammarygland.FemaleReproductiveSystemPrimarysexorgans:2ova

2、ries.Secondarysexorgans:2Fallopiantubes.Uterus.Vagina.Externalgenitalia.2mammaryglands.ADULTOVARY1-Germinalepithelium:outerlayerofflatcells.2-Tunicaalbuginea:denseC.Tlayer.3-Outercortex:ovarianfolliclesandinterstitialcells.4-Innermedulla:highlyvascularlooseC.T.OvarianCycle:OverviewOvarianFolliclesTh

3、ecortexoftheovaryinadultscontainsthefollowingtypesoffollicles:PRIMORDIALfollicles.PRIMARYfollicles:UnilaminarMultilaminarSECONDARY(ANTRAL)follicles.MATUREGraafianfollicles.1.PrimordialFolliclesTheonlyfolliclespresentbeforepuberty.Theearliestandmostnumerousstage.Locatedsuperficiallyunderthetunicaalbu

4、ginea.Eachisformedofaprimaryoocyte(25µm),surroundedbyasinglelayerofflatfollicularcells.2.PrimaryFolliclesTheydevelopfromtheprimordialfollicles,atpubertyundertheeffectofFSH.a)Unilaminarprimaryfollicles:aresimilartoprimordialfollicles,but:theprimaryoocyteislarger(40m).thefollicularcellsarecuboidalins

5、hape.2.PrimaryFolliclesb)Multilaminarprimaryfollicles:1ryoocytelargercoronaradiatagranulosacellszonapellucidathecafolliculifollicularfluid(liquorfolliculi)3.Secondary(Antral)FolliclesMultilaminarprimaryfolliclesbecomesecondaryfollicleswhenacompleteantrumfilledwithliquorfolliculiisformed.1ryoocyteisp

6、ushedtooneside.Thecafolliculidifferentiatesintothecainternaandthecaexterna.ZonagranulosaCoronaradiataFollicularantrumThecainternaThecaexterna1ryoocyte4.Mature(Graafian)Folliclelarge,thinwalledwidefollicularantrumlarge1ryoocytezonapellucidacoronaradiatadiscusproligeruszonagranulosabasementmembranethe

7、cafolliculi:thecainterna&thecaexternaZonagranulosaCoronaradiataFollicularantrumThecainternaThecaexternaThecafolliculi1ryoocyteDiscusproligerusZonapellucidaAtreticFolliclesDuringgrowthoftheovarianfolli