Fingerprints

Question 1

Several ancient cultures used fingerprints as..

Answer 1

personal markings

Question 2

IAFIS

Answer 2

Integrated Automated Fingerprint Identification System

Question 3

What is IAFIS?

Answer 3

a national fingerprint and criminal history database

Question 4

What IAFIS contains?

Answer 4

digital fingerprints, mug shots, scars, tattoos, other identification records

Question 5

Individuals whose fingerprints are in IAFIS

Answer 5

Criminals 
Known and suspected terrorists
Military personnel 
Civilians seeking work
Anyone who needs a background check

Question 6

Prints

Answer 6

fingers, toes, feet, palms, and lips are covered in small ridges
raised portions of skin are arranged in connected units called dermal
help us grip

Question 7

Fingerprint

Answer 7

the impression left behind by a finger

Question 8

The imprint of a fingerprint consists of

Answer 8

natural secretions of the sweats gland that are present in the friction ridge of skin

Question 9

Secretions include

Answer 9

water
oils
salts
dirt

Question 10

Formation of fingerprints

Answer 10

patterns start forming at 10 weeks gestation and are influenced by the environment surrounding the fetus
identical twins have unique fingerprint patterns

Question 11

Ridge patterns

Answer 11

recognizable pattern of ridges found on the end pads of fingers that form lines on the surfaces of objects in a fingerprint

Question 12

Major ridge patterns are

Answer 12

Arches
Whorls
Loops

Question 13

Arches

Answer 13

ridge pattern originates from one side and continues to oher side

Question 14

Whorls

Answer 14

bull’s eye

Question 15

Loops

Answer 15

ridge pattern flows inward and returns in direction of origin

Question 16

Loops elements

Answer 16

have a core = center of loop
can be ulnar (opens toward little finger)
delta = triangular ridge pattern

Question 17

Ridge count of a loop

Answer 17

draw an imaginary line fro center of core to middle of delta

count the number of ridges between the core and the center of data

Question 18

Minutiae

Answer 18

fine details of a fingerprint that makes it unique

Question 19

Patent fingerprints

Answer 19

visible prints left on a surface when blood, ink, or some other liquid comes in contact with the hands is transferred to that surface

Question 20

Plastic fingerprints

Answer 20

indentations left in some soft material such as clay, putty, and wax

Question 21

Latent fingerprints

Answer 21

prints not visible to the unaided eye

can be made visible by lifting and dusting with powders by using a chemical reaction

Question 22

can fingerprints be altered or disguised?

Answer 22

yes, if a trauma produces a scar that is deep enough to damage the dermis, then it will alter the fingerprints