Respiratory System

123456789
Across
  1. 4. This is also called the throat
  2. 6. These are small sacks in the lungs that allow oxygen and carbon dioxide to move through the blood
  3. 8. This is in your chest and helps you breathe
  4. 9. This is the main muscle for inhaling
Down
  1. 1. This is where your words come out of
  2. 2. This is the main passageway to the lungs
  3. 3. This is also known as the windpipe
  4. 5. You can take in and let our air with this
  5. 7. This is also known as the voice box