Across
- 2. deliver oxygenated air to the alveoli
- 3. tiny sac like structures
- 4. allows friction free movement during respiration
- 7. carries oxygen rich blood to the heart
- 8. narrow long passage way to the left lung
- 10. found between the ribs
- 13. surrounds the thoracic cavity
- 15. transporting air to the lungs
- 18. connect the respiratory bronchioles to the alveolar sacs
- 19. last part of a bronchiole that does not contain alveoli
Down
- 1. passages between alveolar walls
- 3. clusters of alveoli
- 5. forms the anterior part of the interior mediastinum
- 6. reduce friction over the heart
- 9. long flat bone protecting the contents of the chest
- 11. outermost of the pleural membranes
- 12. transports foods and liquids from mouth to stomach
- 14. carries oxygen poor blood to the lungs
- 16. point of attachment between the lung root and the lung
- 17. fluid filled space that surrounds the lungs