Skeletal system

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Across
  1. 1. how many classifications of bones
  2. 4. upper arm bone
  3. 6. how many bones are in the body
  4. 7. what surrounds the heart and lungs
  5. 9. how many bones are a baby born with
Down
  1. 1. largest bone in the body
  2. 2. how does the system help organs
  3. 3. what cells do some bones make
  4. 5. what is the smallest bone
  5. 8. how many bones in a finger