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The Axial Skeleton

The Axial Skeleton. Honors Anatomy & Physiology. Skeletal Divisions. 206 separate bones + cartilages Axial Skeleton (80 bones) Skull (22 bones) + 7 associated bones Thoracic Cage (24 ribs + sternum) Vertebral Column (26 bones ) Appendicular Skeleton (126 bones) Limb bones

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The Axial Skeleton

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  1. The Axial Skeleton Honors Anatomy & Physiology

  2. Skeletal Divisions • 206 separate bones + cartilages • Axial Skeleton (80 bones) • Skull (22 bones) + 7 associated bones • Thoracic Cage (24 ribs + sternum) • Vertebral Column (26 bones) • Appendicular Skeleton (126 bones) • Limb bones • Pectoral and pelvic girdles

  3. The Skull

  4. Paranasal Sinuses: Mucosal lined air cavities that lighten the skull and resonate sound, mucusal secretions are released into the nasal cavity

  5. Anterior View

  6. Superior View

  7. The Skull

  8. Newborn Skull

  9. The Thoracic Cage

  10. The Vertebral Column • 7 Cervical vertebrae • Atlas C1 (yes) • No body • Axis C2 (no) • dens • 12 Thoracic vertebrae • Articulate with ribs • 5 Lumbar vertebrae • Largest • Sacrum and coccyx fused together

  11. Atlas and Axis

  12. Typical Vertebrae

  13. Sacrum and Coccyx

  14. Homework • Write 1 paragraph explaining • Compare Scoliosis, Lordosis and Kyphosis • What are they • How treated • How compare • Include works cited

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