The Respiratory System

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Across
  1. 6. known as the voice box
  2. 7. one of the many tiny branches from the bronchi ; carries air to and from alveoli with in the lung
  3. 8. aids breathing
  4. 9. a thick sticky substance that filters the air entering the body
  5. 10. connects the pharynx and stomach
Down
  1. 1. a thin, flexible flap in the front of the larynx , fold over and block the glottis during swallowing
  2. 2. one of many small blood vessels that have walls that are one cell thick
  3. 3. an organ that exchanges gasses between the atmosphere and the blood
  4. 4. the tube that carries air between the pharynx and the lungs
  5. 5. the two branches of the trachea ; function in carrying air to and from the lungs
  6. 11. the passageway between the mouth and nose and the esophagus and larynx ; the throat
  7. 12. the space between the vocal folds