Word: sternum
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Dates: during 1880-1889
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...falling off in the depth of the chest is marked, dropping, as it does, from the 80 per cent. to the 5 per cent. class. It is attributable to an inward curve of the spine, between the shoulder blades, and a depression of the lower part of the sternum, or breast bone. There has been considerable compensation, as evidenced by the size of the chest and the lateral prominence of the ribs, but it will be observed that the breathing capacity, although higher than we should expect from the depth of the chest, is still lower than it should...
Professor - "Do you know what the sternum is?" Student - "It's the bone the tail feathers grow out of." Class all have the colic...