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Understanding the Skeletal System and Its Functions

Learn about the skeletal system - providing shape and support, protecting organs, producing blood cells, and more. Explore bone structure, joint types, and the axial and appendicular skeleton.

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Understanding the Skeletal System and Its Functions

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  1. Providing shape and support Protecting internal organs Storing minerals and fat Producing blood cells and platelets Assisting in movement Muscle attached to bones!! 5 Functions of the Skeletal System

  2. Axial Skeleton: includes the skull, spine, ribs and sternum 80 bones Appendicular Skeleton: includes the appendages of the body, which are the shoulders, arms, hips, and legs Two Major Skeletal System Parts

  3. Skeletal System Bone Shapes • Four basic bone shapes • 1. Long- arms, legs and fingers • 2. Short- wrist and ankles • 3. Flat- skull and sternum • 4. Irregular- spine

  4. Typical Four Layers: Periosteum:Covers Bones Compact Bone: Lies beneath the periosteum Spongy Bone: Lies beneath the compact bone Bone Marrow: Fills the gaps between the spongy bone Bone Structure

  5. Ball and Socket Joint:Round end of bone fitting snuggly within another bone Ex. Shoulder and Hip Joints of the Body

  6. Hinge Joint: Movement at joint in one direction like a door Ex. Knee and Elbow Joints of the Body

  7. Pivot Joint: Bone resting atop another bone permitting free movement Ex. Neck, Wrist and Ankles Joints of the Body

  8. Fixed Immovable:Joint does not move Ex. Skull Gliding Joint: Bones slipping over other bones with a free flowing movement Ex. Knuckles Joints of the Body

  9. Ligaments:Connect bone to bone The Connectors of the Body

  10. The Connectors of the Body!! • Tendon:Attaches muscles to bones

  11. The Connectors of the Body • Cartilage: It acts as a cushion between bones at a joint and protects the bones

  12. https://www.youtube.com/watch?v=yJoQj5-TIvE

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