Tenprint Fingerprint Ridge Detail & Pattern Types Flashcards
6 cards from real Tenprint Fingerprint Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
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Which of the three basic fingerprint pattern types is characterized by ridges that enter and exit from the same side of the finger?
Answer: Loop
A loop pattern has ridges that enter from one side, curve back, and exit from the same side, with one delta and a core.
What is the term for a loop whose ridges flow toward the little finger side of the hand?
Answer: Ulnar loop
An ulnar loop opens toward the ulnar (little finger) side of the hand, which is the most common loop pattern type.
What distinguishes a plain arch from a tented arch?
Answer: Tented arches have an upthrust, angle, or two of the three loop requirements; plain arches have a smooth wave
A tented arch has a pronounced upthrust in the ridges, a sharp angle, or two of the three characteristics of a loop, while a plain arch flows smoothly.
How many deltas does a plain whorl have?
Answer: Two
A plain whorl has two deltas and at least one ridge that makes a complete circuit around the core.
What is a 'delta' in fingerprint science?
Answer: A triangular formation of ridges, rod, or dot at the point of pattern divergence
A delta is the triangular ridge formation where ridges from three different directions converge, marking the boundary of the pattern area.
Which whorl subtype contains two separate loop formations, each with its own core and shoulders, arranged within the whorl?
Answer: Double loop whorl
A double loop whorl consists of two distinct loop formations, each with its own shoulders and core, swirled together within the pattern.
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