The human body

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Across
  1. 5. What is the name for the muscle that allows the eye to move up and down?
  2. 9. What is the term for the main vein that carries blood from the body to the heart?
  3. 10. What is the term for the bone that makes up the upper arm?
  4. 12. What is the name for the part of the brain that controls breathing and heart rate?
  5. 13. What is the term for the tiny air sacs in the lungs where gas exchange takes place?
  6. 14. What is the name for the tissue that connects bones to other bones in the body?
  7. 15. What is the largest organ in the human body?
Down
  1. 1. What is the smallest bone in the human body?
  2. 2. What is the term for the process by which food is broken down in the stomach and intestines?
  3. 3. What is the name for the muscle that separates the chest and abdominal cavities?
  4. 4. What is the scientific name for the windpipe?
  5. 6. What is the term for the bone that makes up the lower leg?
  6. 7. What is the term for the hormone that regulates blood sugar levels in the body?
  7. 8. What is the term for the main artery that carries blood from the heart to the body?
  8. 11. What is the name for the tube that connects the mouth to the stomach?