Across
- 1. the upper part of the respiratory system, which contains vocal cords
- 3. the system that contains the organs that supply your blood with oxygen
- 4. two passageways that branch from the trachea
- 5. a large dome shaped muscle below the lungs that expands and compresses the lungs, enabling breathing
Down
- 1. two large organs that exchange oxygen and carbon dioxide
- 2. a passageway in your throat that takes air into and out of your lungs