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Skeletal System

Mummy, mummy, I'm scared!. BonesJointsAssociated cartilagesSupportProtectionMovementMineralsHematopoiesis. That bone's got some class. Classified by shape and originCartilage vs. membrane boneLongShortFlatIrregular. Electives. SesamoidWormianPneumaticHeterotrophicAccessory. Macroscop

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Skeletal System

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    1. Skeletal System March 8, 2007 BIOL 203 Karen Kraus

    2. Mummy, mummy, I’m scared! Bones Joints Associated cartilages Support Protection Movement Minerals Hematopoiesis

    3. That bone’s got some class Classified by shape and origin Cartilage vs. membrane bone Long Short Flat Irregular

    4. Electives Sesamoid Wormian Pneumatic Heterotrophic Accessory

    5. Macroscopic Bone Anatomy Periosteum Cancellous (spongy) bone Compact (dense, lamellar) bone Long bone structure diaphysis epiphysis medullary cavity endosteum articular cartilage

    6. More Mac Flat bone structure diploe red marrow cavity trabeculae

    7. He’s a growing boy... Nutrient foramen Osteogenic layer Epiphyseal plate

    8. Smaller than the eye can see Haversian systems Lamellae Canaliculi Haversian canal Volkmann’s canal

    9. Osteon Lacuna Osteocyte Canaliculi

    10. Chemical level Organic cells osteoid Inorganic hydroxyapatites

    11. Let there be.... Bone! Intramembranous vs. endochondral Intramembranous fibrous connective tissue and mesenchyme mesenchyme osteoblasts secretion of osteoid angiogenesis formation of marrow and periosteum

    12. Lamellar bone Endochondral osteogenesis hyaline cartilage primary ossification : infiltration of vasculature mesenchyme osteoblasts bone collar formation death of diaphyseal cartilage invasion of the periosteal bud

    13. Endochondral continued elongation of diaphysis and formation of medullary cavity secondary ossification in epiphyses epiphyseal plates form

    14. My, how tall you’ve grown! Longitudinal growth epiphyseal plates

    15. Have you put on some weight? Appositional growth periosteal (osteogenic) layer - osteoblasts

    16. Interior design Remodeling unit -- osteoclast & osteoblast vitamins and minerals hormonal control calcitonin parathyroid hormone control via mechanical stress Wolff’s law

    17. ouch Simple Compound Comminuted (shattered) Depression Compression Spiral Greenstick

    18. Superglue! Closed vs. open reduction hematoma fibrocartilaginous callus bony callus remodeling

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