Diaphragm-lung demonstration. Image 2 of 2. Bell jar, balloons (red) and a rubber seal (green) being used to demonstrate the principles of the human l


Diaphragm-lung demonstration. Image 2 of 2. Bell jar, balloons (red) and a rubber seal (green) being used to demonstrate the principles of the human lungs and diaphragm. The balloons represent the two human lungs, and the rubber seal represents the diaphragm, a sheet of tissue at the base of the chest cavity between the chest and the abdomen. It is the relaxation and upwards movement of the diaphragm (combined with movement of the chest muscles) that recompresses the chest cavity and causes the lungs to deflate. The inflation and deflation of the lungs as the diaphragm moves down and then up, is seen in images H465/352 and H465/353.


Size: 2848px × 4256px
Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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