男生殖系--组织学和胚胎学.ppt

男生殖系--组织学和胚胎学.ppt

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ReproductivesystemlMalereproductivesystem.lFemalereproductivesystem.ltestislGenitalexcurrentductslAccessorysexglandslpenisbladderDuctusdeferensepididymistestisTunicavaginalisCorpuscavernosumCorpusspongiosumSeminiferoustubuleStraighttubuleRetetestisEfferentductuleDuctusepididymisSeminalvesicleprostateBulbourethralglandsummarysummarylltunicatunicaalbugineaalbugineaseptumseptumlllobulesoftestislobulesoftestisllineachlobule,consistofineachlobule,consistofseminiferousseminiferoustubules.tubules.llCTCTstromastroma,containsinterstitial,containsinterstitialcells.cells.一、一、testisTestis&epididymis

（一）

（一）

（一）

（一）seminiferousseminiferoustubuletubuleseminiferousepitheliumlSupportingcells/sertolicellslSpermatogeniccellsSeminiferoustubulespermatogoniumBasallaminaPrimaryspermatocyteSertoliCspermatid1.1.SpermatogeniccellsSpermatogeniccellsspermatogoniumspermatogoniumprimaryprimaryspermatocytespermatocytesecondarysecondaryspermatocytespermatocytespermatidspermatidspermatozoaspermatozoaspermatogenesislllocation:

closelyattachtobasallocation:

closelyattachtobasallaminaoflaminaofspermatogenicspermatogenicEpiEpi.llroundround，organellsorganellspoorly-poorly-developeddevelopedlldifferentiateintodifferentiateintoprimaryprimaryspermatocytespermatocyte

（1）spermatogoniumA型型B型型spermatogonia（22）primaryprimaryspermatocytespermatocytellattachtotheluminalsurfaceofattachtotheluminalsurfaceofthethespermatogoniaspermatogonia.lllarge.large.llafter1after1ststmeioticdivisionmeioticdivision，produce2secondaryproduce2secondaryspermatocytespermatocyte。

Primaryspermatocytes（33）secondarysecondaryspermatocytespermatocytellNoteasytobeseeninsection.Noteasytobeseeninsection.llAfterthesecondmeioticAfterthesecondmeioticdivisiondivision，form2form2spermatidsspermatids.（4）spermatidladjoiningtothelumen.lNodivision，undergoextensivecellremodeling,astheydifferentiateintosperm.lthisprocessiscalledspermiogenesis。

（5）spermlShapedpollywog，divideintoheadsperm&tailsperm。

lhead:

nucleus+acrosome。

lInacrosome,variantacrosomalenzymes.ltail:

motileequipment.spermsperm2.supportingClSertoliC.lstainedlightly，nucleulusisobvious。

lsideswithtightlyjunction.lsupport,nutrientspermatogeniccells.SupportingCBlood-Blood-seminiferousseminiferoustubulebarriertubulebarrier：

llThestructure,preventlargemolecularThestructure,preventlargemolecularThestructure,preventlargemolecularsubstancesexchangebetweenthebloodsubstancesexchangebetweenthebloodsubstancesexchangebetweenthebloodandtheandtheandtheseminiferousseminiferousseminiferoustubule.tubule.tubule.llcostituentscostituentscostituents：

endothelium&basallaminaofendothelium&basallaminaofendothelium&basallaminaofcap.cap.cap.、CTCTCT、basallaminaofbasallaminaofbasallaminaofspermatogenicspermatogenicspermatogenicepiepiepi.Andthetightjunctionsofadjoining.Andthetightjunctionsofadjoining.AndthetightjunctionsofadjoiningsupportingC.supportingC.supportingC.llTight-junctionTight-junctionTight-junctionistheessentialconstituentistheessentialconstituentistheessentialconstituentofblood-ofblood-ofblood-seminiferousseminiferousseminiferoustubulebarrier.tubulebarrier.tubulebarrier.

（二）

（二）interstitialClLeydigC,Ingroup,large,polygonal,highlyeosinophilic.lSteroid-secretingC:

elaboratesER,Mit.Withcristae.Secrettestosterone/androgenInterstitialClmaintainspermatogenesis&secondarysexcharacteristics.lBeresponsibleforthedevelopmentofgenitalorgansinmale.lKeepsexcapability.FunctionsofleydigC（三）（三）（三）（三）straighttubule&straighttubule&reteretetestistestisllStraighttubuleStraighttubuleStraighttubule:

nearthe:

nearthe:

nearthemediastinummediastinummediastinumofofofthetestis,wherethetestis,wherethetestis,whereseminiferousseminiferousseminiferoustubuletubuletubuleassumeashortstraightcourse.assumeashortstraightcourse.assumeashortstraightcourse.llReteReteRetetestistestistestis:

thestraighttubuleemptyinto:

thestraighttubuleemptyinto:

thestraighttubuleemptyintothethetheretereteretetestis,antestis,antestis,ananastomosinganastomosinganastomosingchannelchannelchannelsystemwithinthesystemwithinthesystemwithinthemediastinummediastinummediastinum.llSpermSpermSpermproducedinproducedinproducedinseminiferousseminiferousseminiferoustubuletubuletubulepassbystraighttubule&passbystraighttubule&passbystraighttubule&retereteretetestis,testis,testis,leavingtestisandarrivinginleavingtestisandarrivinginleavingtestisandarrivinginepididymisepididymisepididymis.StraighttubuleStraighttubuleseminiferousseminiferoustubuletubuleReteRetetestistestislhead、body&tail.lhead:

efferentductules.lbody&tail:

dutusepididymis.summary二、二、epididymis1.efferentductulesl8-12，continuouswithretetestislEpi.=highc