Respiratory System

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Across
  1. 3. this body part helps you breathe
  2. 6. the flow of air, especially that encountered by a human
  3. 8. the main organ of the respiratory system
  4. 11. any of the major air passages of the lungs which diverge from the windpipe
  5. 12. Duct, is a tube composed of smooth muscle
  6. 13. extends from the larynx toward the lungs
  7. 14. is a cluster of many individual alveoli
Down
  1. 1. is a muscular tube in the middle of your neck
  2. 2. used to chew your food
  3. 4. the red liquid that circulates in the arteries and veins of humans
  4. 5. a cavity within a bone or other tissue
  5. 7. further splits into many smaller branches less than a millimeter
  6. 9. is a sheet of muscle slung underneath the lungs
  7. 10. box,help you speak
  8. 11. the physical structure of a person or an animal, including the bones, flesh, and organs.