Respiratory System

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Across
  1. 4. The tube in our throat that carries air to our lungs ____
  2. 5. This gas is released when we breathe out _______
Down
  1. 1. We breathe in air through our _______
  2. 2. The two spongy organs that helps us breathe ______
  3. 3. A muscle that helps us breathe ________