Lungs Small 305×320 Medium 610×640 Large 976×1024 Download TIFF Original 2288×2400 | (5.3 MB) Description Diagram showing human lungs, heart, and throat. Keywords breathe, chest Galleries Human Lower Respiratory System Source: W. Morrant Baker and Vincent Dormer Harris, Hand-Book of Physiology (Philadelphia:P. Blakiston, Son & Co., 1892) 170