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a broad connective tissue sheet that forms the diaphragm. It is composed of interlacing fibers that arise from the lumbar vertebrae, the costal margin, and the xiphoid process of the sternum.
central tendon, central tendon of diaphragm
The central portion of the diaphragm, consisting of a flat aponeurosis into which the muscle fibers of the diaphragm are inserted.
See also: tendon