Levels of Org + Body System 9/22

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Across
  1. 1. a group of organs that work together
  2. 6. system that moves blood, oxygen, and nutrients around the body
  3. 8. system that sends and receives messages to the brain and body
  4. 10. a group of tissues that work together
  5. 12. a group of cells that work together
  6. 13. system that takes in oxygen and releases carbon dioxide
Down
  1. 2. system that works with the muscular system to help the body move, includes our bones
  2. 3. system that releases hormones that help control growth, metabolism, and mood
  3. 4. system that works with the skeletal system to help the body move
  4. 5. the basic unit of life
  5. 7. system that protects the body from the outside world, includes skin, hair, and nails
  6. 9. system that breaks down food intro nutrients
  7. 11. system that removes waste and excess water