Skeletal system

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Across
  1. 5. what are short and irregular attachment bones called?
  2. 6. the long bone of the upper arm
  3. 8. it protects the heart, lungs, and blood vessels.
  4. 9. what’s another name for the kneecap?
Down
  1. 1. what are bones on the vertical axis of the body called?
  2. 2. what allows there to be less friction in the movement of bones in the knee?
  3. 3. what is in between the shoulder blade and sternum?
  4. 4. what is the large bone of the upper leg
  5. 7. what stabilizes other bones In the shoulder blade?