The Respiratory System
Across
- 2. What your rib and diaphragm muscles do when you breathe out
- 5. Very thin, small vein
- 6. Distance between alveoli and blood in capillaries around them
- 7. What your rib and diaphragm muscles do when you breathe in
- 8. Process to bring air in and out of your lungs
- 9. What your cells need to release energy
Down
- 1. Tiny air-filled sacs connected to bronchioles
- 3. Tiny tube like passageways that end in alveoli
- 4. A series of tube-like passageways
- 5. What your cells need to get rid of
- 8. Brought to your oxygen by the respiratory system
- 9. Second(s) it takes blood to travel through your lungs