Body Systems Crossword (Hard - Summative)

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Across
  1. 4. these are the type of muscles we can control
  2. 6. the skeletal system offers ________ & protection
  3. 9. the elbow is an example of this kind of joint
  4. 10. the body system responsible for breathing
  5. 11. which intestine is longer?
  6. 12. many muscles work in ________
  7. 13. the inner-most part of the bone
  8. 14. the heart is divided into sections called ______
Down
  1. 1. carbon ______ is exhaled from your lungs
  2. 2. where does digestion begin?
  3. 3. another name for your wind pipe
  4. 5. the tube that travels from your mouth to your stomach
  5. 7. muscles that work without us thinking about it is called ________
  6. 8. your ______ protect your heart and lungs
  7. 12. the biggest part of blood that is mostly made of water