Diaphragm Small 264×320 Medium 528×640 Large 845×1024 Download Tiff Original 1980×2400 | (776.5 KB) Description "This is the name applied in anatomy to designate the transverse muscle which, in man and the mammalia generally, separates the cavity of the thorax or chest from that of the abdomen or belly." — Chambers' Encyclopedia, 1875 Keywords chest, diaphragm, mammal, Mammalia, muscle Galleries Comparative Anatomy Source: Chambers's Encyclopedia (Philadelphia, PA: J. B. Lippincott Company, 1875)