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Types of Joints

Types of Joints. Ball and Socket Structure. A bone with a round end fits in a cup-shaped so cket that does not move. Ball and Socket Movement Produced. Circular Nearly 360 0 Allow twisting an d turning movement. Ball and Socket Examples. Hip Shoulder. Hinge Structure.

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Types of Joints

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  1. Types of Joints

  2. Ball and Socket Structure • A bone with a round end fits in a cup-shaped socket that does not move

  3. Ball and Socket Movement Produced • Circular • Nearly 3600 • Allow twisting andturning movement

  4. Ball and Socket Examples • Hip • Shoulder

  5. Hinge Structure • One bone has an outwardly curved surface and the other bone has an inwardly curved surface

  6. Hinge Movement Produced • Two opposite directions such as back and forth • Up and down nearly 900 • Allow parts to bend and straighten

  7. Hinge Examples • Elbow • Knee

  8. Gliding Structure • The surfaces of the bones that touch are flat

  9. Gliding Movement Produced • Bones move back and forth or side to side

  10. Gliding Examples • Wrist • Ankles

  11. Pivot Structure • Rounded end of one bone passes through a hole in another

  12. Pivot Movement Produced • Allows twisting

  13. Pivot Examples • Head on neck

  14. What are Ligaments? • Fibrous bands of connective tissue linking two or more bones, cartilages, or structures together, to form a joint.

  15. 5 functions of a skeleton • Support –the body is kept in position by the muscles that attach to the skeleton. • Protection –the flat bones protect the internal organs. • Movement –provided by the joints

  16. 5 Functions of a Skeleton • Production of Blood –blood cells are produced in the red bone marrow in the center of some bones, including the pelvis, ribs, vertebrae and sternum. The yellow bone marrow stores fat. • Storage –Minerals are stored in the bone, mostly calcium and phosphorus

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