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Architecture of the Lung: Morphology and Function

Itoh, Harumi MD, PHD*; Nishino, Mizuki MD; Hatabu, Hiroto MD, PHD

doi: 10.1097/01.rti.0000142835.06988.b0

The architecture of the lung is discussed with special focus on lung parenchyma. The lung parenchyma is mainly comprised of numerous air-containing passages and intervening fine structures, corresponding to alveolar ductal lumens and alveoli, as well as alveolar septa and small pulmonary vessels occupying 10% of total parenchymal volume. The shapes and relative arrangements of alveolar ducts and alveoli are discussed in detail, which is followed by a brief description of bronchial circulation and pulmonary lymphatics.

From the *Department of Radiology, University of Fukui Faculty of Medical Sciences, Matsuoka-cho, Yoshida-gun, Fukui, Japan; and †Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA.

Reprints: Hiroto Hatabu MD, PhD, Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Boston, MA 02215 (e-mail:

© 2004 Lippincott Williams & Wilkins, Inc.