男性生殖系统Male Reproductive System

ReproductiveSystem

生殖系统ReproductiveSystemCompositionInternalgenitalorgan内生殖器

Gonads

生殖腺(sexglands)Manufacturethesexcellsansecretethesexhormones.Genitalducts

生殖管道TransportthesexcellsfromthesiteofproductionintositefertilizationAccessoryglands

附属腺Secretethefluid

Externalgenitalorgan外生殖器sexualreproduction

asexualreproductionDolly(July5,1996-Feb.14,2003)clonefrommammaryepitheliumEve(?)clonefromAdam’sribCloneMaleReprodutiveSystem男性生殖系统MaleReproductiveSystem★MaleinternalgenitalorgansGonad–testis

睾丸GenitalductsEpididymis附睾Ductusdeferens输精管Ejaculatoryduct射精管Maleurethra男尿道

AccessoryglandsSeminalvesicle精囊Prostate前列腺

Bulbourethralgland尿道球腺MaleexternalgenitalorgansScrotum阴囊Penis阴茎

Gonad–testis睾丸★GeneralfeaturesPaired,smooth,ovoidmalereproductiveorgan,slightlyflattenedanteroposteriorlyLocatedinscrotumProducesspermandsecretesandrogensGonad–testis睾丸StructuresoftestisTunicaalbuginea

白膜AtoughfibrouscoatMediastinurmtestis

睾丸纵隔Septulatestis

睾丸小隔NumerousfibrousintotheglandLobulesoftestis

睾丸小叶Containcontortedseminiferoustubules

精曲小管Striaghtseminiferoustubules

精直小管

Retetestis

睾丸网Efferentductulesoftestis

睾丸输出小管openintotheheadoftheepididymisTestisSeminiferoustubulesEpididymis附睾★Locatedonsuperiorextremityandposterolateralaspectoftestis★Comma-shaped,with附睾头headofepididymis附睾体body

ofepididymis附睾尾tailofepididymisContainstortuouscanalthatextendsfromtestistoductusdeferensinspermaticcordFunction–thesiteofaccumulationandstorageofspermDuctusdeferens输精管Athick-walledmusculartubeapproximately50cminlength.IttransportsspermformepididymistoejaculatoryductDuctusdeferens

输精管★Divisions1.Testicularpart

睾丸部extendsformthetailofepididymistothesuperiorextremityoftestis2.Spermaticpart

精索部extendsformsuperiorextremityoftestistothesuperficialinguinalring,theplacewherethevasectomyisperformed3.Inguinalpart

腹股沟部extendsformsuperficialtodeepinguinalrings4.Pelvicpart

盆部crossestheobturatorneurovascularbundleandtheuretertoreachthebaseofbladder,whereitexpandstoformthe

ampullaductusdeferentis

输精管壶腹Vasectomy

★Spermaticcord精索ExtendsfromthesuperiorextremityoftestistothedeepinguinalringContentsofthespermaticcord

Ductusdeferens输精管TesticularanddeferentialarteriesPampiniformplexus蔓状静脉丛NervesandlymphaticsVestigeofvaginaprocess腹膜鞘突

Coveringofthespermatic

cordInternalspermaticfascia精索内筋膜Cremaster提睾肌Externalspermaticfascia精索外筋膜Ejaculatoryduct

射精管FormedbyunionofdistalportionductusdeferensandductofseminalvesiclePassesthroughtheupperpartofprostateandopensintotheprostaticpartofurethraSeminalvesicle精囊

Pairedsacculated,coiledglandsSecretepartofseminalfluidLocatedonposteriorsurfaceofbladder,lateraltoampullaductusdeferentisProstate前列腺

★PositionLiesbehindpubicsymphysisBetweenneckofbladderandurogenitaldiaphragm★Shape—chestnut-shapedorgan

Base底Apex尖Body体:Prostaticsulcus前列腺沟(onposteriorsurfaces)Enclosedbyathininnerfibrouscapsule(truecapsule)andastrongouterenvelopeofpelvicfascia

Prostate前列腺ContainsoffivelobesAnteriorlobe前叶Middlelobe中叶Posteriorlobe后叶Leftandrightlobes侧叶RelationshipsAnterior:

pubicsymphysisPosterior:ampula

ofrectunSuperior:urinarybladder,seminalvesicle,ampullaductusdeferentis

Inferior:

urogenitaldiaphragmhyperplasiaofprostateAxialobliqueMRI(STIRsequence)demonstratesnormalhighsignalwithinprominentseminalvesicleslyingabovetheprostateinayoungman.Bulbourethralgland尿道球腺Twosmallpea-shapedglandsLocatedinthedeeptransversemuscleofperineumOpensintobulbarportionofurethraScrotum阴囊

PouchofthinskinlyingbelowtherootofthepenisDividedintotwohavesbyseptumofscrotum,containstestesandtheirductsWalls

SkinDartoscoat

肉膜

DeeptoskinAconnectivetissuelayerthatcontainsmanysmoothmusclefibersContractsinresponsetocold,pullingthetestesclosertothebodyandwrinklingtheskinAponeurosisofobliquusexternusabdominisObliquusinternusabdominisTrasversusabdominisTransversefasciaParietalperitoneumExternalspermaticfascia精索外筋膜Cremaster提睾肌Internalspermaticfascia精索内筋膜Tunicavaginalisoftestis睾丸鞘膜

ParietallayerViscerallayer

VaginalcavityCorrespondinglayersofthecoatsofspermaticcord,testisandabdominalwall

Penis阴茎DevisionsGlans阴茎头Body阴茎体Root阴茎根Containscavernousbodyofpenis阴茎海绵体(2)cavernousbodyofurethra

尿道海绵体(1)Skin－thinandloose

Prepuceofpenis阴茎包皮Frenulumofprepuce包皮系带阴茎根阴茎头阴茎体阴茎包皮尿道外口Cavernousbodyofpenis阴茎海绵体Cruspenis阴茎脚Bulbofurethra尿道球Coronaglandis阴茎头冠Cavernousbodyofurethra

尿道海绵体尿道海绵体白膜皮肤阴茎海绵体尿道海绵体男尿道阴茎海绵体白膜阴茎中隔Maleurethra男性尿道About16-22cm★Devisions：1.Prostaticpart前列腺部Lieswithintheprostateandisthewidestandmostdilatableportionofurethra.2.Membranouspart

膜部Passesthroughtheurogenitaldiaphragmsurroundbythesphincterofurethra3.Cavernouspart海绵体部TransversethelengthofcavernousbodyofurethraInClin