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.
Read the first 6 Tenprint Fingerprint Ridge Detail & Pattern Types flashcards as text
What is the 'type line' in fingerprint pattern analysis?
Answer: The two innermost ridges that parallel, diverge, and surround the pattern area
Type lines are the two innermost ridges that run roughly parallel, then diverge to enclose or surround the fingerprint pattern area.
How is the ridge count determined for a loop pattern?
Answer: Count ridges crossing an imaginary line from the core to the delta, not counting the core or delta ridges themselves
The ridge count is determined by counting ridges crossing an imaginary line drawn from the core to the delta, excluding both the core and the delta.
What is the 'core' of a fingerprint pattern?
Answer: The approximate center of the fingerprint pattern, used as a reference point
The core is the approximate center of the fingerprint pattern and is used, along with the delta, as a reference point for ridge counting and tracing.
Which pattern type has no deltas and no recurving ridges?
Answer: Plain Arch
A plain arch has no deltas and no recurving ridges — ridges flow smoothly from one side of the finger to the other in a wave shape.
What is a 'short ridge' in ridge detail analysis?
Answer: A ridge that begins and ends without connecting to other ridges, shorter than a normal ridge
A short ridge (also called an independent ridge) begins and terminates without connecting to other ridges and is shorter than the surrounding ridges.
What is an 'enclosure' or 'lake' in fingerprint ridge detail?
Answer: A ridge that splits into two then rejoins, enclosing a small space
An enclosure (lake) is a ridge that splits, runs separately for a short distance, then rejoins, creating an enclosed oval or circular space.
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