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The Skeletal System

Learn about different types of bone fractures, their treatment methods, and the anatomy and function of the axial skeleton, including the skull, paranasal sinuses, and hyoid bone.

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The Skeletal System

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  1. The Skeletal System

  2. Bone Fractures • Fracture—break in a bone • Types of bone fractures • Closed (simple) fracture—break that does not penetrate the skin • Open (compound) fracture—broken bone penetrates through the skin • Bone fractures are treated by reduction and immobilization

  3. Common Types of Fractures Table 5.2

  4. The Axial Skeleton • Forms the longitudinal axis of the body • Divided into three parts • _______ • __________________ • __________________ * ________________

  5. The Axial Skeleton Figure 5.6a

  6. The Axial Skeleton Figure 5.6b

  7. The Skull • Two sets of bones • ____________ • ____________ • Bones are joined by _________ • Only the __________ is attached by a freely movable joint

  8. Human Skull, Lateral View Figure 5.7

  9. Human Skull, Superior View Figure 5.8

  10. Human Skull, Inferior View Figure 5.9

  11. Human Skull, Anterior View Figure 5.11

  12. Paranasal Sinuses • Hollow portions of bones surrounding the nasal cavity • Functions of paranasal sinuses • __________ the skull • Give ____________ and _____________ to voice

  13. Paranasal Sinuses Figure 5.10a

  14. Paranasal Sinuses Figure 5.10b

  15. The Hyoid Bone • The only bone _____________________________ with another bone • Serves as a moveable base for the tongue • Aids in ___________ and ________

  16. The Hyoid Bone Figure 5.12

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