![]() ![]() In whorls, there are patterns in which there are two or more deltas (first ridge nearest the divergence point of two type lines) and there exists a recurve preceding each delta. Ulnar Loop-these are loops that flow toward the ulna bone of the hand or, in other words, when the downward slope of the loop is from the direction of the thumb toward the little finger of the hand.Radial Loop-these are loops that flow toward the radius bone of the hand or, in other words, when the downward slope of the loop is from the direction of the little finger toward the thumb of the hand.There are two sub-groups that Henry identified in this category: The imprint on the fingerprint card is similar to the reverse image we see when we look in the mirror at ourselves. This backward turn, or loop, is differentiated by how the loop flows on the hand and not how it flows on the card on which the imprint is taken. In loops, the ridges make a backward turn but do not twist. The ridges, which adjoin each other in the center, converge and thrust upward, giving the impression of a pitched tent. However, the difference in the tented arch lies in the ridges in the center, which are not continuous as in the case of the plain arch. Tented Arch-this pattern is similar to the plain arch in that it starts on one side of the finger and flows out in a similar pattern to the other side.The plain arch is the simplest of the fingerprint patterns to discern. The plain arch then continues its journey along the finger to the other side. ![]() It starts on one side of the finger, and then the ridge cascades upward slightly, almost resembling a wave out on the ocean.
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