Overview of the Skeleton 1. Bones of the skeleton Cartilages, ligaments and other connective tissues...

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Transcript of Overview of the Skeleton 1. Bones of the skeleton Cartilages, ligaments and other connective tissues...

Chapter 9

Overview of the Skeleton

1Bones of the skeletonCartilages, ligaments and other connective tissues that stabilize and connectThe skeletal system includes2Functions of the skeletal systemSupportStorage of minerals and lipidsBlood cell productionProtectionLeverage3Subdivisions of the skeletonAxialLies around the bodys center of gravityAppendicularLimbs 4Compact bone (dense)Spongy bone (cancellous)trabeculaBone structure = two types of bone 5Classification of bonesBy the shapeLongFlat ShortIrregularSesamoidSutural6Classification of bones

7Bone Markings (Surface Features)8Bone markingsProjection that are sites of muscle and ligament attachment:Tubercle (tubercle of the rib)Tuberosity (tibial tuberosity)Trochanter (femur)Epicondyle (medial epicondyle-femur)Line (line aspera-femur)Crest (pubic crest)Process (spinous process)Spine (ischial spine)9Tubercle of rib/ tibial tuberosity/medial epicondyle of femur/line aspera of femur//pubic crest/spinous process/ischiial9Bone markingsProjections that help to form joints:Head (femur)Facet (costal facet)Condyle (femur)Ramus (mandible)

10Bone markingsCavities:Sinus (maxillary)

11Bone markingsDepressions and openings for blood vessels and nerves to pass:Foramen (ovale)Meatus (acoustic meatus)Fissure (orbital)Fossa (posterior cranial fossa)

12DiaphysisPeriosteumPerforating fibers (Sharpeys)EndosteumEpiphysesEpiphysial plateEpiphysial lineA typical long bone includes 13A typical long bone includesArticular cartilageMarrow cavityFilled with red or yellow marrow

14Bone Structure

15Bone Growth at an Epiphyseal Cartilage

16Bone Histology17The Histology of Compact Bone

18Basic unit of compact bone is an osteonOsteocytes LacunaePerforating canals (Volkmanns)Central canal

Compact bone1919Compact boneCanaliculiLamellaCircumferentialInterstitialConcentric

20The Structure of Osseous Tissue

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