Research Article

Three-Dimensional Structure and Disposition of the Air Conducting and Gas Exchange Conduits of the Avian Lung: The Domestic Duck (Cairina moschata)

Figure 1

Macrographs of fixed lung specimens showing the dorsolateral aspect of the duck lung. ((a) and (b)) On the dorsolateral surface the rib impressions (arrows) extend down to the level where the laterodorsal secondary bronchi (LD) become visible below the parietal pleura (arrowheads). The trachea (Tr) and the syrinx (Sy) are also shown. (b) Close-up of the lateral view of the right lung showing the superficial disposition of the LD (arrowheads). Arrows indicate costal sulci.
621982.fig.001a
(a)
621982.fig.001b
(b)