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Skeletal System

Skeletal System. Bones. Skeletal System. Name given to the collection of bones in your body. Functions. Protects vital organs Gives shape and form Allows for movement Make blood cells and stores minerals. Two Parts. Axial – Skull, Vertebral Column, Ribs and Sternum. Two Parts.

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Skeletal System

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  1. Skeletal System Bones

  2. Skeletal System • Name given to the collection of bones in your body.

  3. Functions • Protects vital organs • Gives shape and form • Allows for movement • Make blood cells and stores minerals

  4. Two Parts • Axial – Skull, Vertebral Column, Ribs and Sternum

  5. Two Parts • Appendicular – limbs and girdles • Pectoral Girdle – Shoulders • Pelvic Girdle – Hips

  6. Bones • 4 Parts • Periosteum • Compact Bone • Cancellous Bone • Bone Marrow

  7. Periosteum • Outer surface • Contains blood vessels and nerves • Nourishes bone cells

  8. Compact Bone • Next Layer • Provides strength and support • Blood vessels in tiny canals

  9. Cancellous Bone • Inside Compact Bone • Open spaces

  10. Bone Marrow • Inside Cancellous Bone • Thick jelly-like layer that makes blood cells or stores fat.

  11. Joints • The places where two bones meet. • Two types, moving and fixed joints. • Moving can move • Fixed cannot.

  12. Moving Joints • Have 3 parts • Ligaments strong elastic bands that keep the attach one bone to another. • Cartilage cushion the area where bones meet. • Synovial fluid – lubricant

  13. 4 Joints • Sutures • Hinge Joint • Ball and Socket • Sliding Joints

  14. Sutures – Fixed Joint • No movement. • Skulls

  15. Hinge Joint – Moving Joint • Allow for one-way movement • Work just like doors • Elbow, Knee, Fingers

  16. Ball and Socket – Moving Joint • Allow movement in every direction • Shoulders, hips

  17. Sliding Joints – Moving Joint • Allow for lots of flexibility • Wrist

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