UNIT 5 – Skeletal System



Functions of the Skeletal System Support Movement Storage Blood cell production ProtectionLong Bone AnatomyEpiphysisArticular CartilageProximal DistalCompact boneSpongy boneRed bone marrowEpiphyseal plateDiaphysisMedullary CavityYellow MarrowPeriosteumEndosteumOsteoclastsOsteoblastsMicroscopic Anatomy of Bone OsteonsLamellaLacunaOsteocyteCentral CanalCanaliculi Bone Growth (Ossification)Composition of embryonic boneDirection of bony tissue growthEpiphyseal (growth) plateEpiphyseal line Divisions of the SkeletonAxial Skeleton Appendicular Skeleton SkullSutures Fontanels SinusesHyoid BoneOssiclesVertebral ColumnCervicalAtlas –Axis –ThoracicLumbar3371850144716500 58102515875000478155034544000Ribs and SternumTrue RibsFalse RibsFloating RibsAppendicular Skeleton Appendicular 102870010985500377190092138500 401002533153350082867532588200046863003766185002667000454850500476250369125500283845031877000381000-444500 Classification of BonesLong BonesShort BonesFlat BonesSesamoid BonesIrregular BonesArticulationsFibrousExampleCartilaginousExampleSynovialExampleSynovial Joint Structure3116580889000Fibrous CapsuleSynovial FluidSynovial MembraneBursaAspiration31365651147800Joint “cracking”LigamentsMenisciTypes of Synovial JointsBall and SocketMovement: Example:HingeMovement: Example:CondylarMovement: Example:SaddleMovement: Example:GlidingMovement: Example:PivotMovement: Example:InjuriesSprainDislocationSimple/Closed FractureCompound/Open FractureGreenstick FractureComminuted FractureBone DisordersBrittle Bone DiseaseOsteoporosisScoliosisOsteoarthritisHypermobility ................
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