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1、BarCharts,Inc.®WORLD’S#1ACADEMICOUTLINEEndochondralOssification1.Musclefiber:Contractilecells.SkeletalSystemHyalinecartilageArticularcartilage2.Sarcolemma:Plasmamembraneofmusclefiber.Optionalreview:“BoneStructure”section,3.Myofibrils:Smallfiberspackedwithinp.1ofQuickStudy®Anatomygui
2、de.Epiphysismusclefiber;compositionvariesalongFunctionslengthcreatingbandingappearance.Metaphysis4.Aband:Darkareaonmyofibrils.1.Support:Frameworkforbody.Diaphysis5.Iband:Lightareaonmyofibrils.2.Movement:Muscularattachment.6.Zline(disc):MiddleofIband.3.Protection:Brain,spinalcord,tho
3、rax,etc.EpiphysealCompactbone7.Sarcomere:BetweentwoZlines,unitof4.Mineral&lipidstorage:Ca,P,etc.,andcartilagecontraction.lipidsinyellowmarrow.Periosteum8.Hzone:LightareainAband.5.Hemopoiesis:BloodcellformationinredSecondary9.Mline:MiddleofHzone.marrow.ossificationcenter10.Myofilamen
4、ts:Fibersfoundinmyofibrils.SkeletalDevelopment&Growth11.Thickfilaments:Myosinprotein;formsAcenters(oftenoccurshortlyafterbirth).band;boundatMLine.SkeletondevelopsbytransformationofAlthoughnocavityiscreatedandspongy12.Thinfilaments:Actin,tropomyosin,andembryonicmesodermalconnectiveti
5、ssueintoboneremains,theepiphysesoflargebonestroponinproteins;formIband;boundatZline.cartilageand/orbone(i.e.,ossification).serveasprimarysitesofredmarrow.Twomajortypesexist:h.WhereprimaryandsecondaryossificationContractionofSkeletalMuscle1.Intramembranousossification:centersmeet(met
6、aphysis),athinlayerof1.AnervesignaltriggersthereleaseofUndifferentiatedmesoderm(mesenchyme)cartilage,epiphysealplate,remainsuntilacetylcholineintoneuromuscularsynapse.transformedtobone.Examples:Dermalbonesadulthood,allowingforincreasesinbone2.Receptorsinsarcolemmacombinewith(flatsku
7、llbones,mandibleandclavicle).length.Inadults,thecartilageisconvertedtoacetylcholine,triggeringapropagateda.Osteoprogenitorstemcells(tobecomebone,creatinganepiphysealline-boneactionpotential(PAP)thatspreadsacrossbone-formingcells)clusterandformorganiclengtheningisnolongerpossibleatth
8、ispoint.membraneand
