Respiratory System

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Across
  1. 6. an oscillated technique our vocal cords use to speak, shout or sing.
  2. 7. epithelia that lines the nasal cavity to prevent dust and bacteria
  3. 9. process of receiving oxygen and releasing carbon dioxide
  4. 11. outermost part of the respiratory system
  5. 13. characteristic of the alveoli membrane to allow oxygen and CO2 through
  6. 16. type of cells that make mucus
  7. 17. respiration step in which CO2 is exchanged with an O2 molecule inside the body
  8. 18. type of muscle that lines the trachea and constricts when any object blocks the airways
  9. 20. part of the digestive system which includes the tongue; frontal part of the pharynx
  10. 21. epithelia that provides simple diffusion for gas exchange
  11. 22. another way to divide the respiratory system into different categories; upper and lower
Down
  1. 1. carries deoxygenated blood towards the heart
  2. 2. process of chemical change that happens in our body to supply energy to itself
  3. 3. tiny hair that moves mucus outwards
  4. 4. another word for a sense of "smell"
  5. 5. windpipe
  6. 8. covers the larynx and prevents food entering the airway
  7. 10. structures in the lower tract when respiratory system is divided anatomically
  8. 12. carries oxygenated blood back to the heart
  9. 14. a structure in the conducting zone when respiratory system is divided functionally.
  10. 15. process of getting air into the lungs and back out
  11. 19. movement of oxygen and carbon dioxide in the system; respiration step