Respiratory System

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Across
  1. 2. Muscle located under lungs that contracts and relaxes when breathing in and out
  2. 4. The two main branches of the trachea that leads into lungs
  3. 5. A flap of tissue at base of the tongue that stops foods and liquids from entering the trachea
  4. 7. Throat area that serves as a passageway for air and food
  5. 9. Primary organs of the Respiratory System
Down
  1. 1. Windpipe, conducts air as well as filtering and moistening it
  2. 3. Tiny air sacs in the lungs where gas exchange occurs
  3. 6. Voice box, located. below pharynx
  4. 8. Entry point for air