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Thursday, November 13, 2008

The Triradius (Delta) and Ridges



1) Derma Ridges : Ridges of the skin produced by the projecting papillae of the dermis on the palm of the hand, producing a fingerprint characteristic of the individual.

2) Triradius : the figure at the base of each finger print in the palm, produced by rows of papillae running in three directions so as to form a triangle

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