JOINT TYPES

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Across
  1. 5. Flat bone surfaces slide over one another, as in the wrist and ankle.
  2. 6. Two curved surfaces fit together like a rider on a horse, allowing the thumb to move in two planes.
  3. 7. A slightly movable joint where bones are joined by cartilage, as in the spine.
  4. 8. An immovable joint, such as those between the plates of the skull.
  5. 9. One bone rotates within a ring formed by another, allowing the head to turn side to side.
Down
  1. 1. A freely moving joint with a fluid-filled capsule that lubricates the bone ends.
  2. 2. A rounded head sits in a cup-shaped cavity, allowing movement in all directions; found at the hip and shoulder.
  3. 3. Allows movement in one direction only, like a door; found at the elbow and knee.
  4. 4. An oval head fits into a shallow cavity, allowing bending and side-to-side movement but no rotation; found at the wrist.