Human Embryology-山東大學中國大學mooc課后章節(jié)答案期末考試題庫2023年

HumanEmbryology_山東大學中國大學mooc課后章節(jié)答案期末考試題庫2023年Concerningmaturationofthefemalegamete(oogenesis),whendotheoogoniaentermeiosisIandundergoDNAreplicationtoformprimaryoocytes?

參考答案:

Duringfetallife

Thelateralpalatineprocessderivesfrom

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maxillaryprominence

Componentsoftheblood-airbarrierinthelungrederivedfromwhichofthefollowingsources?

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Visceralmesodermandendoderm

WhichofthefollowingisamajorcharacteristicofmeiosisI?

參考答案:

Pairingofhomologouschromosomes

Anormalsomaticcellcontainsatotalof46chromosomes.Whatisthenormalcomplementofchromosomesfoundinasperm?

參考答案:

22autosomesplusasexchromosome

Intheprocessofmeiosis,DNAreplicationofeachchromosomeoccurs,formingastructureconsistingoftwosisterchromatidsattachedtoasinglecentromere.Whatisthisstructure?

參考答案:

Aduplicatedchromosome

Approximatelyhowmanyspermwillbeejaculatedbyanormalfertilemaleduringsexualintercourse?

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350million

Ayoungwomanenterspubertywithapproximately40,000primaryoocytesinherovary.Abouthowmanyoftheseprimaryoocyteswillbeovulatedovertheentirereproductivelifeofthewoman?

參考答案:

480

Theprochordalplatemarksthesiteofthefuture

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mouth

Thematernalandfetalcomponentsoftheplacentaare

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deciduabasalisandvillouschorion

Ayounginsulin-dependentdiabeticwomaninherfirstpregnancyisconcernedthatherdailyinjectionofinsulinwillcauseacongenitalmalformationinherbaby.Whatshouldthephysiciantellher?

參考答案:

Insulindoesnotcrosstheplacentalmembrane

Pancreaticisletsconsistofalpha,beta,anddeltacells,whichsecretelucagon,insulin,andsomatostatin,respectively.Thesecellsarederivedfrom

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endoderm

Howsoonafterfertilizationoccurswithintheuterinetubedoestheblastocystbeginimplantation?

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Byday7

Whendoesthemetanephrosbecomefunctional?

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Atweek10ofdevelopment

Aurachalcystisaremnantofthe

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allantois

Duringsurgeryforabenigncystonthekidney,thesurgeonnotesthatthepatient'srightkidneyhastwouretersandtworenalpelves.Thismalformationis

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aprematuredivisionoftheuretericbud

Thetransitionalepitheliumliningtheuretersderivedfrom

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mesoderm

Astructurefoundwithintheadultfemalepelvisfromthegubernaculumisthe

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roundligamentoftheuterus

Themostcommoninterventricularseptaldefect(VSU)seenclinicallyis

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membranousVSD

Themostcommonatrialseptaldefect(ASD)seenclinicallyis

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foramensecundumdefect

Thehepaticsinusoidsthatcanbeobservedhistologicallyinanadultliverarederivedfromthe

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vitellineveins

Aphysicianmonitoringanewborninfant'sheartsoundsusingastethoscopehearsthecharacteristicmurmurofapatentductusarteriosus.Howsoonafterbirthshouldthismurmurnormallydisappear?

參考答案:

1-2hours

AmuscularVSDisacarcliacmalformationthatinvolveswhichofthefollowingsepta

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Interventricularseptum

Whichofthefollowingbestdescribestheplacentalcomponentsofdizygotictwins?

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Twoplacentas,twoamnioticsacs,twochorions

A26-year-oldpregnantwomanexperiencesrepeatedepisodesofbrightredvaginalbleedingatweek28,week32,andweek34ofpregnancy.Thebleedingspontaneouslysubsidedeachtime.Useofultrasoundshowsthattheplacentaislocatedinthelowerrightportionoftheuterusovertheinternalos.Whatisthediagnosis?

參考答案:

Placentaprevia

A32-year-oldpregnantwomanat30weeksofgestationcomestoherphysicianbecauseofexcessweightgainina2-weekperiod.Ultraso-nographyrevealspolyhydramnios.Whichfetalabnormalityismostlikelyresponsibleforthepolyhydramnios?

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Esophagealatresia

Thespecializedgroupofmesenchymalcellsthataggregatetoformbloodislandscentrallyandprimitivebloodvesselsperipherallyarecalled

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cardiacprogenitorcells

Themostcommonsiteofathyroglossalcystis

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midlineclosetothehyoidbone

Duringsurgeryfortheremovalofathyroidtumor,anumberofsmallmassesofglandulartissuearenotedjustlateraltothethyroidgland.Metastasisfromthethyroidtumorissuspected,buthistologicalanalysisofabiopsyrevealsparathyroidtissueandremnantsofthymus.Howcanthisfindingbeexplained?

參考答案:

Ectopicglandulartissueiscommonlyfoundinthisregion

Whichstructureisassociatedwiththeformationoftheneck?

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branchialarch

Thebranchialmembraneis

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thestructurebetweenbranchialcleftandpharyngealpouch

Thestructurebetweenstomodeumandprimitivepharynxis

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oropharyngealmembrane

Digeorgesyndromeisnotcharacterizedby

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adeletiononthelongarmofchromosome21

Mediancleftlipiscausedby

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thefailureofmedialnasalprominencetofusewitheachother

Obliquefacialcleftiscausedby

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thefailureofmaxillaryprominencetofusewiththecorrespondinglateralnasalprominence

Completecleftpalateiscausedby

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thefailureoflateralpalatineprocesstofusewithmedianpalatineprocessandthefailureoflateralpalatineprocesstofusewitheachother

Whendoesasecondaryoocytecompleteitssecondmeioticdivisiontobecomeamatureovum?

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Atfertilization

Whichofthefollowingeventsisinvolvedinthecleavageofthezygoteduringweek1ofdevelopment?

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Adecreaseinsizeofblastomeres

Whichofthefollowingstructuresmustdegenerateforblastocystimplantationtooccur?

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Zonapellucida

Inoogenesis,whichofthefollowingeventsoccursimmediatelyfollowingthecompletionsofameiosisII?

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Formationofafemalepronucleus

Betweenwhichtwolayersistheextraembryonicmesodermlocated?

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Exocoelomicmembraneandcytotrophoblast

Whichofthefollowingarecomponentsofthedefinitivechorion?

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Extraembryonicsomaticmesoderm,cytotrophoblast,andsyncytiotrophoblast

Intheproductionofmalegametes,whichofthefollowingcellsremainsdormantfor12years?

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Primordialgermcell

Apartialdevelopmentoftheaorticopulmonaryseptumwillresultinwhichofthefollowing?

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Persistenttruncusarteriosus

Whichgermlayersarepresentattheendofweek3ofdevelopment(day21)?

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Ectoderm,mesoderm,andendoderm

Veryoftenthefirstindicationawomanhasthatsheispregnantisamissedmenstrualperiod.Inwhichweekofembryonicdevelopmentwillawomanexperienceherfirstmissedmenstrualperiod?

參考答案:

Startofweek3

Therespiratorydiverticuluminitiallyisinpencommunicationwiththeprimitiveforegut.Whichofthefollowingembryonicstructuresisresponsibleforseparatingthesetwostructures?

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Tracheoesophagealseptum

Thetracheaislinedwithpseudostratifiediliatedcolumnarepitheliumwithgobletcells.Thisepitheliumisderivedfrom

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endoderm

A4-day-oldbabyboyhasnotdefecatedsincecominghomefromthehospitaleventhoughfeedinghasbeennormalwithoutanyexcessivev