Muscular and Skeletal System

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Across
  1. 1. bones that connect your pelvis to your skull
  2. 4. bone marrow makes ________ cells which help fight disease
  3. 7. muscles __________ or get shorter to help you move
  4. 8. the ___________ protects your brain
  5. 9. muscles help you __________ your body
Down
  1. 2. muscles ___________ your organs
  2. 3. inside hollow bones is ___________ ____________
  3. 5. your ____________ protects your heart and lungs
  4. 6. __________ and muscles work together to protect organs