Deck 4: Fingerprint Patterns and Classification

Question 1

What features of the volar pad determine the fingerprint pattern type during human fetal development?

Answer 1

a. Dimensions of the volar pad
b. Volar pad size
c. Volar pad shape
d. The position of the volar pad on the finger

Question 2

Fingerprint pattern types are unique, individualizing features.

Answer 2

False

Question 3

Name and describe the two features of most fingerprint patterns.

Answer 3

a. Core - center of the pattern
i. The focal point around which the ridges flow
b. Delta - an area of friction ridge skin where ridge paths flowing in three different directions create a triangular pattern

Question 4

Name and describe the most common fingerprint pattern type in the population.

Question 5

What are the three requirements of a loop pattern?

Question 6

The two sub-categories of a loop are radial loops and double loop whorls.

Question 7

Ridge count refers to the number of friction ridges that cross an imaginary line between the core and delta.

Question 8

Typelines are the two friction ridges, either continuous or broken, that diverge from the delta in opposite directions and surround the main pattern.

Question 9

Whorls are what percentage of the population of fingerprint patterns?

Question 10

What are the two features of a whorl?

Question 11

What are the four types of whorls?

Question 12

What are accidentals?

Question 13

Whorl tracing comprises following a friction ridge path from the right delta to a place opposite the left delta.

Question 14

Describe the three classifications of whorl tracings.

Question 15

What is the least common fingerprint pattern in the population?

Question 16

Describe the two sub-patterns of arches.

Question 17

What is fingerprint classification?

Question 18

What technology negated the need for manual classification and filing of hard copies of fingerprint records?

Question 19

What are the various components of primary Henry classification?

Question 20

Why is the number one added to the numerator and denominator?

Question 21

What numerical value is assigned to each finger (#1-10) if the finger contains a whorl pattern?

Question 22

Determine the primary Henry classification for an individual with whorls on the following fingers: right thumb, left thumb, and left index finger.

Question 23

What is NCIC? What does it contain?

Question 24

Describe NCIC classification.

Question 25

What is the NCIC classification of an individual with the following pattern types: plain whorls on both thumbs with meet tracings, ulnar loops on the #2-5 fingers with a ridge count of 7, a radial loop on the #7 finger with a ridge count of 13, and ulnar loops on the #8-10 fingers with a ridge count of 11.