21. These bronchioles give rise to the air sacs in the lungs called the alveoli . 22. In the alveoli , macrophages ingest these microconidia. 23. What is known is that yawning does ventilate all the alveoli in the lungs. 24. Once it colonizes the alveoli , the body responds by stimulating the inflammatory response. 25. This provides back pressure which pops open alveoli . 26. The teeth are set relatively far apart in alveoli with a slightly thickened ridge. 27. For the first time, we have been able to induce the formation of alveoli , 28. At birth the lungs are very undeveloped with only a fraction of the alveoli present. 29. Lung parenchyma is the substance of the lung outside of the alveoli and respiratory bronchioles. 30. AMNH 5214 has 35 dental alveoli in the left dentary and 36 in the right.
