21. During inspiration, increased lung volumes cause alveolar expansion and lengthwise stretching of the interstitial alveolar vessels. 22. In addition, the tidal volume at rest in an individual is 1 / 10 the lung volume . 23. Zone 4 can be seen at the lung bases at low lung volumes or in pulmonary oedema. 24. Severe emphysema has been treated with lung volume reduction surgery, with some success in carefully chosen cases. 25. He memorized their calculations of whale lung volumes to predict when the animals would surface or dive. 26. Heart mass and lung volume are important in determining how scaling can affect metabolic function and efficiency. 27. As a result of breathing at low lung volume , the muscles are tighter and the airway is narrower. 28. That raises the heart temperature, causing lung volume to increase, in turn raising the airflow at the mouth. 29. Conversely, during hypoventilation at low lung volume , breath holdings are performed with the lung half full of air. 30. Finally the collected mucus reaches the large airways where it can be cleared by a high lung volume huff.