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1、Publishedin2011byBritannicaEducationalPublishing(atrademarkofEncyclopædiaBritannica,Inc.)inassociationwithRosenEducationalServices,LLC29East21stStreet,NewYork,NY10010.Copyright©2011EncyclopædiaBritannica,Inc.Britannica,EncyclopædiaBritannica,andtheThistlelogoareregisteredtrademarksofEncyclopædiaBr
2、itannica,Inc.Allrightsreserved.RosenEducationalServicesmaterialscopyright©2011RosenEducationalServices,LLC.Allrightsreserved.DistributedexclusivelybyRosenEducationalServices.ForalistingofadditionalBritannicaEducationalPublishingtitles,calltollfree(800)237-9932.FirstEditionBritannicaEducationalPubl
3、ishingMichaelI.Levy:ExecutiveEditorJ.E.Luebering:SeniorManagerMarilynL.Barton:SeniorCoordinator,ProductionControlStevenBosco:Director,EditorialTechnologiesLisaS.Braucher:SeniorProducerandDataEditorYvetteCharboneau:SeniorCopyEditorKathyNakamura:Manager,MediaAcquisitionKaraRogers:SeniorEditor,Biomed
4、icalSciencesRosenEducationalServicesHeatherM.MooreNiver:EditorNelsonSá:ArtDirectorCindyReiman:PhotographyManagerMatthewCauli:Designer,CoverDesignIntroductionbyCathyVanderhoofLibraryofCongressCataloging-in-PublicationDataThereproductivesystem/editedbyKaraRogers.p.cm.—(Thehumanbody)Includesbibliogra
5、phicalreferencesandindex.ISBN978-1-61530-253-6(eBook)1.GenerativeorgansPopularworks.2.HumanreproductionPopularworks.I.Rogers,Kara.QP251.R444652011612.6—dc222010006081Onthecover:Inthefemalereproductivesystem,eggsaredevelopedandstoredintheovaries;deliveredtotheuterusbythefallopiantubes;and,iffertili
6、zed,developintoaviablefetusintheuterus.Purestock/GettyImagesOnpage10:Adevelopingfetus,formedbytheunionofspermandegg,representsoneofthemostimportantbiologicalconcepts:reproduction.RalphHutchings/VisualsUnlimited/GettyImagesPages19,52,87,118,151,178,211,246,248,251,253©www.istockphoto.com/PatriciaRi
7、dgwayCONTENTSIntroduction10Chapter1:AnatomyoftheHumanReproductiveSystem19TheMaleReproductiveSystem20ExternalGenitalia2121ThePenis23TheScrotum26TheTestes27StructuresoftheSpermCanal31AccessoryOrgans35TheFemaleRepro