Body Systems crossword 1

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Across
  1. 3. Organ that makes decisions for the body
  2. 5. Type of involuntary muscle that lines organs
  3. 7. Type of muscle that makes heart beat
  4. 8. the main function of the Muscular System
  5. 10. Connect Muscles to bones (skeletal system)
  6. 13. Type of muscle that pulls on skeleton
Down
  1. 1. One of the main functions of the Skeletal System
  2. 2. Connect bones to other Bones (skeletal system)
  3. 4. A series of joints that make up a person's back
  4. 6. The balance that keeps organisms alive
  5. 9. Bones make this (bone marrow)
  6. 11. Structures that send signals around the body
  7. 12. Bone that protects Brain