fingerprints

the first person ot confirm ridge permanency was

Herschel

when the innermost sufficient recurve contains an uneven number of rods rising as high as the shoulders, the core is

placed on the center rod

used his own fingerprints to prevent forgery on payroll checks

Gilbert Thompson

the interseciton of one ridge against another running in different directions is

angle

the outer layer of friction ridge skin is

epidermis

the part of a recurving ridge between the shoulders of the loop, free of appendages abuttinf upon it at a right angle

sufficient recurve

that part of a loop or whorl in which appear the cores, deltas, and ridges with which we are concerned in classifying

the pattern area

the first european to recognize the value of friction ridge skin and use them for identification purposes

Sir William Hershel

considered to be the father of dermatoglyphics

Harold Cummins, Ph.D.

this level of detail encompasses creases, scars, or imperfections

third level

the approximate center of a pattern

core

influence overall pattern flow, localized pattern configurations, and localized pattern trend of friction ridges

volar pads

innermost layer of the epidermis and commonly reffered to as the generating layer

stratum basale

the two innermost ridges which start parallel, diverge, and surround or tend to surround the pattern area

type lines

this level of detail includes the startinf position of a ridgw, the path it takes, its length, and its end, is known as

second level

green fingerprint cards are used for

eliminations

that point on a ridge at or in front of and nearest the center of the divergene of the type lines

delta

a fetus’ hands appear as flat paddle-like structures around how many weeks of gestations

5-6 weeks

published a paper concluding that ridge patterns area ffected by external forces and pressure by neighboring ridges

inez whipple

a fetus’ hand has an external morphology similar in proportion to an infant around how many weeks of gestations

8-9 weeks

intentional recordings of detail found in the friction ridge skin of an individual

known prints

scars are unique and persistent feature of friction ridge skin true or false

true

a high colar pad typically produces what type of pattern

whorl

which of the following is not a term used to define ridge endings, bifurcations and dotss

points

these cells are an extension of the body’s immune system

langerhan cells

the dermis is composed of two layers

papillary and reticular layers

that type of pattern in which at least two deltas are present with a recurve in front of each

whorl

the first european to publish friction ridge skin observations using the newly invented microscope

Nehemiah Grew

the term ridgeology was first used by

David Ashbaugh

this individual installed the french bertillion anthropometric identification system

juan vucetich

what are the three loop requirements

delta, sufficient recurve and ridge count of at least 1

if a traced ridge passes outside the right delta (below) and three or more ridges intervene it si designated as

outer

the second later of friction ridge skin is called the

dermis

in a letter to charles darwin states “fingerprints can be classified easily” and “ridge detail is unique”

Dr. Henry Faulds

these cells are an extension of hte body’s nervous system and participate in the transmission of the sensation of touch

merkel cells

whorl tracing begins at

the far left delta

if traced ridge passes inside the right delta (above) and three or more ridges intervene it is designated as

inner

ognized as the first person to start a permanence study

welker

created wooden engravings of fingerprints and published their images in his books

thomas bewick

developed the henry classifcation system

Sir Edward henry

epidermal ridges become visible on the volar surface as a fingerprints around how many weeks of gestation

15-17 weeks

recognized as the first person to study the persistence of friction ridge skin

sir william hershel

the study of uniqueness of friction ridge structures and their use for personal identification

ridgeology

the primary cell of the epidermis is

keratinocytes

the forking or dividing of one ridge into two or more ridges

bifurcations

the pigment producing cells of the epidermis

melanocytes

what process causes surface ridges to flatten and lose elasticity in the dermis

aging

the study of body measurements for identification purposes

anthropometry

blue fingerprint cards are used for

employment

that type of pattern which possesses either an angle, and upthrust, or two of the three characteristics of a loop

tented arch

malleable peg-like projections of the papillary dermis between primary and secondary ridges

dermal papillae

a low volar pad typically produces what typw of pattern

arch

an intermediate volar pad typically produces what type of pattern

loop

when a series of nifurcations opens toward the core at the point of divergence of the type lines, which is chosen

the bifurcation closest to the core

fingerprinting criminals was introduced into the US prison system at

leavenworth penitentiary

suggested associating the identification of fingerprints found at a crime scene with finger impressions in a collections

Dr. Hemry Faulds

examined thin slices of fetal skin, cut in cross-section to friction ridges, from the fingers of fetuses

Alfred Hale Ph.D.

the overall direction of ridge flow in a print is known as

first level

when the innermost sufficient recurve contains an even number of rods rising as high as the shoulders the core is

placed upon the farther of the two center rods

a wrist bracelet can be found at

the bottom of the hand

the first to use the newly invented microscope for medical studies, a layer of skin was later named after him

Marcello Malpighi