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Respiratory System Homework

Across

  1. responsible for helping the body breathe
  2. The ______ protects the lungs from damage.

Down

  1. organs in the body that get oxygen from the air we breathe
  2. also called the windpipe, it filters the air we breathe
  3. the main muscle used when breathing, located at the bottom of the lungs
  4. the respiratory system delivers ______ to the body
  5. the respiratory system takes ______ ________ away from the body
  6. Air comes in the body through the ______.
  7. The best way to keep your lungs healthy.

Key

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Across

  1. respiratorysystem
  2. ribcage

Down

  1. lungs
  2. trachea
  3. diaphragm
  4. oxygen
  5. carbondioxide
  6. nose
  7. exercise