Loopy Lungs (IMAGE) University of Utah Caption This stylized depiction shows airflow in the iguana lung during inhalation (top) and exhalation (bottom) in one slice along the long axis of the lung model. The arrows point in the direction of flow, and the length of the arrow indicates the magnitude of flow velocity. Color of the background slice and arrows indicates flow velocity along the long axis of the model. Credit University of Utah Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.