Across
- 3. bronchi & alveoli combined & connected
- 6. organ where blood is filtered
- 8. lower chambers of heart
- 11. cellular waste
- 12. uses both mechanical & chemical digestion
- 13. upper chambers of heart
- 14. fragments of red blood cells,help form scabs
Down
- 1. passages that direct air into lungs
- 2. contracts:in relaxes:out
- 4. comes before large intestine in digestive system
- 5. rein in the horse
- 7. in kidney, tiny filter that blood goes through
- 9. windpipe, not esophagus
- 10. liquid part of blood
- 13. archers shoot away from their castle