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Skeletal Outline

Skeletal Outline. Function of Bones. Provide shape and support Protection of internal organs Storing minerals and fat Producing blood cells and platelets Assisting with movement. Bone Tissue. Composed of: inorganic salts (calcium), bone cells, blood vessels, nerves, collagen

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Skeletal Outline

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  1. Skeletal Outline

  2. Function of Bones • Provide shape and support • Protection of internal organs • Storing minerals and fat • Producing blood cells and platelets • Assisting with movement

  3. Bone Tissue • Composed of: inorganic salts (calcium), bone cells, blood vessels, nerves, collagen • Needs food and oxygen • Continue to grow throughout life, replacing damaged bone

  4. Components of Bone • Osteoblasts (build up bone) • Osteoclasts (clean up bone and debris) • Cartilage • Aponeurosis • Dense (compact bone) • Spongy (cancelous bone)

  5. Skeletal System • Axial = 80 bones • Appendicular = 126 bones

  6. Shapes of Bones • Long: femur, humerus, tibia, fibula • Short: small cubed-shaped: carpals, tarsals, toes • Flat: usually cover organs: scapula, pelvis, skull,ribs • Irregular: bones of ear, vertebrae, bones of face • Sesamoid: patella (knee cap)

  7. Review: name the type of bone

  8. Skull • Cranium = 8 bones • Face = 14 bones • Ears • Mandible is the only movable part of the skull

  9. Teeth • Crown • Root • Enamel • Cementum • Dentin • Pulp • 32 teeth in an adult

  10. Thorax • Ribs • True ribs: first 7 • False ribs: lower 5 ( last 2 are called floating ribs) • Intercostal space: contains muscles, blood vessels, nerves • Sternum • Vertebral bones = 26 bones true false

  11. Articulations (joints) • Joints are named by the bones they join • Synarthrosis (immovable): cranial bones • Amphiarthrosis (slightly movable): ribs connected to sternum • Diarthrosis (freely movable, synovial) • Synovial joints contain a bursa: fluid filled sac

  12. 6 types of Diarthrosis(movable) Joints • Ball and socket: shoulder, hip • Hinge: elbow, ankle, knee • Gliding: in between the carpal bones • Pivot: Radius on ulna • Saddle: Thumb (thumb touching finger tips) • Gomphosis: (teeth)

  13. Examples of Diarthrodial (moveable) joints

  14. Name the Joints

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