Skeletal System Notes

Skeletal System Notes

Life Science
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Skeletal System Notes

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Skeletal System Notes
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  1. Skeletal System Notes

    Slide 1 - Skeletal System Notes

  2. Your body has two organ systems that work together to provide support & help you move– the skeletal system & the muscular system.

    Slide 2 - Your body has two organ systems that work together to provide support & help you move– the skeletal system & the muscular system.

  3. The skeletal system is made up of bones & cartilage that form the framework of your body.

    Slide 3 - The skeletal system is made up of bones & cartilage that form the framework of your body.

  4. The muscular system includes the muscles that help you move & help things inside your body move.

    Slide 4 - The muscular system includes the muscles that help you move & help things inside your body move.

  5. All humans have a stiff internal skeleton made of bone.

    Slide 5 - All humans have a stiff internal skeleton made of bone.

  6. The bones of your body have five main jobs–

    Slide 6 - The bones of your body have five main jobs–

  7. -to support the body & give it shape

    Slide 7 - -to support the body & give it shape

  8. -to protect internal organs

    Slide 8 - -to protect internal organs

    • -to work with the muscles to move
  9. -to store fat & other minerals (calcium & phosphorus)

    Slide 9 - -to store fat & other minerals (calcium & phosphorus)

  10. -to make  blood cells (bone marrow)

    Slide 10 - -to make blood cells (bone marrow)

  11. A human baby is born with 350 bones, but an adult human has 206 bones.

    Slide 11 - A human baby is born with 350 bones, but an adult human has 206 bones.

  12. Bones are made up of mostly calcium & phosphorus.

    Slide 12 - Bones are made up of mostly calcium & phosphorus.

  13. Slide 13

    • Bones are very much alive & contain blood vessels & nerve tissue.
  14. Cartilage is a strong flexible connective tissue found at end of bones where they act as a cushion.

    Slide 15 - Cartilage is a strong flexible connective tissue found at end of bones where they act as a cushion.

  15. Cartilage has no blood cells so it must absorb nutrients from body fluids. (diffusion)

    Slide 16 - Cartilage has no blood cells so it must absorb nutrients from body fluids. (diffusion)

  16. Bones are attached to other bones by connective tissues called ligaments.

    Slide 17 - Bones are attached to other bones by connective tissues called ligaments.

  17. A joint is the place where two bones come together & are joined by ligaments to allow bones to move in different ways.

    Slide 18 - A joint is the place where two bones come together & are joined by ligaments to allow bones to move in different ways.

  18. Two types of joints in the body…

    Slide 19 - Two types of joints in the body…

  19. Immovable joints allow little or no movement (skull & ribs)

    Slide 20 - Immovable joints allow little or no movement (skull & ribs)

  20. Movable joints that allow a wide range of movement.

    Slide 21 - Movable joints that allow a wide range of movement.

  21. Pivot joint

    Slide 22 - Pivot joint

    • Bones rotate around each other (allows side-to-side motion)
  22. Examples…

    Slide 23 - Examples…

    • Neck
  23. Gliding joint

    Slide 24 - Gliding joint

    • Bones slide over each other (allows you to bend & flex)
  24. Examples…

    Slide 25 - Examples…

    • Wrist, ankle, vertebrae (back)
  25. Hinge joint

    Slide 26 - Hinge joint

    • Back-and-forth motion (can only move one direction… unable to twist)
  26. Examples…

    Slide 27 - Examples…

    • Knee, elbow, fingers, toes, jaw
  27. Ball & socket joint

    Slide 28 - Ball & socket joint

    • Rotational or circular motion… greatest range of motion
  28. Examples…

    Slide 29 - Examples…

    • Shoulder, hip
  29. The best way to keep your bone healthy are regular exercise & to eat a balanced diet with meats, beans, green leafy vegetables & dairy products.

    Slide 30 - The best way to keep your bone healthy are regular exercise & to eat a balanced diet with meats, beans, green leafy vegetables & dairy products.

  30. Osteoporosis is the condition where mineral loss can cause bones to become weak & break easily.

    Slide 31 - Osteoporosis is the condition where mineral loss can cause bones to become weak & break easily.