Across
- 5. The______contracts when you breathe in and moves downward.
- 6. You swallow about__________or more icky mucus made from the airways.
Down
- 1. Your______lung is a tiny bit smaller than your right lung.
- 2. The Respiratory System transfers________to the body’s cells.
- 3. sacs/ _________transfer the oxygen to the blood.
- 4. Cavity/ _________heats and purifies air that passes through.
- 6. Cardiovascular system/ ________makes sure that the oxygen-rich blood flows naturally.
