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| Description: This is what a colour-enhanced image of the inner surface of your lung looks like. The hollow cavities are alveoli; this is where gas exchange occurs with the blood. Picture Stats: Views: 1042 Filesize: 80.13kB Height: 464 Width: 600 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=9004 Keywords: The Inner Surface of Human Lung |