Across
- 2. A muscle that helps you breathe by moving up and down.
- 4. The waste gas your body breathes out.
- 7. Smaller branches of the bronchi that carry air deeper into the lungs.
- 8. The windpipe that carries air from the mouth and nose to the lungs.
- 10. A device you use it smell with
- 11. Small blood vessels that surround the alveoli and carry gases to and from the blood.
Down
- 1. The process where gases move from an area of high concentration to low concentration.
- 3. Organs where gas exchange happens.
- 5. The gas you breathe in that your body needs for energy.
- 6. Tiny air sacs in the lungs where gas exchange takes place.
- 7. Two main airways that branch from the trachea into each lung.
- 9. Bones that protect the lungs and other organs in the chest.