biology crossword puzzle
Across
- 3. connects veins and arteries
- 5. carries oxygen from the lungs to body cells
- 6. directs air to the lungs
- 8. system that gets nutrients to the body
- 9. system that carries things around the body
- 11. carries blood to somewhere
- 12. carries blood away
- 13. system that removes waste
Down
- 1. where most absorption happens
- 2. helps create scabs
- 4. passes air to the lungs
- 6. Airways in the lungs that lead from the bronchi to the alveoli.
- 7. Sacs for exchange of oxygen and carbon dioxide
- 10. a system that allows us to breathe