Body Systems Review #2

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Across
  1. 1. system that is responsible for gas exchange
  2. 4. hormone that is released giving you extra energy during a "fight or flight" situation
  3. 5. system that transforms chemical energy in food into heat and thermal energy
  4. 6. 2 tubes that urine travels through as it leaves the kidneys headed to the bladder
  5. 10. the "cause" that happens first
  6. 11. sends message to the muscles telling them to move
  7. 12. system that protects body and includes hair, skin and nails
Down
  1. 2. male reproductive cell
  2. 3. where urine is held before it leaves the body through the urethra
  3. 7. system that releases hormones
  4. 8. system that removes waste
  5. 9. the "effect" that happens because of a stimulus
  6. 13. female reproductive cell