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The quality or state of being flexible
Flexure mountains.
movement flexure is also produced by the coiling of the visceral sac and shell; primitively the latter was bowl-shaped; but the ventral flexure, which brings together the two extremities of the digestive tube, gives the visceral sac the outline of a more or less acute cone.
The first is a ventral flexure in the antero-posterior or sagittal plane; the result of this is to approximate the two ends of the alimentary canal.
(After Robert.) A, Embryo without flexure.
B, Embryo with ventral flexure of the intestine.