Lobule of the lung Small 276×320 Medium 552×640 Large 883×1024 Download Tiff Original 2070×2400 | (479.9 KB) Description "A, an air sac; B, an air sac cut open; C, capillary network over an air sac; D, branch of pulmonary artery; E, branch of pulmonary vein; F, bronchial tube." — Blaisedell, 1904 Keywords air, anatomy, artery, capillary, lobule, lung, pulmonary, respiration, sac, vein Galleries Human Lower Respiratory System Source: Albert F. Blaisedell Our bodies and How We Live (Boston: Ginn &, 1904) 168