Hair Test 1

Question 1

exchange theory by

Answer 1

Edmond Locard

Question 2

Locard’s theory

Answer 2

two objects come into contact always transfer of material

Question 3

person transfers his hair to an object

Answer 3

direct

Question 4

direct transfers are always

Answer 4

primary

Question 5

person transfers hair not his

Answer 5

indirect

Question 6

indirect can be

Answer 6

primary or secondary

Question 7

87 study gaudette and tessarolo

Answer 7

indirect more common than direct, secondary happens in case work

Question 8

peabody study

Answer 8

headgear and sample similar to combing

Question 9

contamination issues

Answer 9

list of protective clothing and separation of victim from suspect

Question 10

Picking and tweezing procedure

Answer 10

10% bleach solution, bindles or boxes

Question 11

scraping procedure

Answer 11

metal spatula, airborne particles, clean everything

Question 12

tape lift procedure

Answer 12

Frei-sulzer 51, grid fashion, different adhesive quality, more than less

Question 13

Vacuuming procedure

Answer 13

special units required, recovers too much, contamination

Question 14

microscope plays role in maximizing information

Answer 14

microscopy

Question 15

image not seen directly

Answer 15

virtual image

Question 16

image seen by light rays on screen

Answer 16

real image

Question 17

5-10 times magnification

Answer 17

magnifying glass

Question 18

1500x mag

Answer 18

compound

Question 19

two compounds together

Answer 19

comparison

Question 20

10-125 x mag 3D

Answer 20

stereoscopic

Question 21

light waves to one plane

Answer 21

polarizing

Question 22

visible, ultraviolet, infrared (trace)

Answer 22

microspectrophotometer

Question 23

beam of electrons, million x

Answer 23

scanning electron microscope

Question 24

stay in focus when objective changes

Answer 24

parfocal

Question 25

center of view when objective changes

Answer 25

parcentric

Question 26

distance from objective to cover glass

Answer 26

working distance

Question 27

field of view and depth of focus both

Answer 27

decrease with increase in magnification

Question 28

the ability of the objective lens to resolve fine detail

Answer 28

numerical aperture

Question 29

beyond 1000x the numerical aperture of objective

Answer 29

empty magnification

Question 30

microscope care

Answer 30

common sense

Question 31

stereoscopic microscope also called

Answer 31

dissecting microscope

Question 32

collection of pollen and spores

Answer 32

forensic palynology

Question 33

pounds and smalldon 2

Answer 33

number of fibers transferred based on area, pressure,number of contacts

Question 34

pounds and smalldon 4

Answer 34

mechanisms loose, pulled out, fragments pulled loose

Question 35

kidd and robertson

Answer 35

pressure only to a point, polyester and viscose less than cotton, acrylic, wool

Question 36

Differential Shedding Phenomenon

Answer 36

blended fabrics don’t shed proportionately

Question 37

salter study

Answer 37

minor component shed more readily

Question 38

proportions refer to weight composition

Answer 38

garment labels

Question 39

mitchell and holland case

Answer 39

only wool transferred in blend pants

Question 40

polyester cotton mixture

Answer 40

corduroy

Question 41

Cordiner 85

Answer 41

more fine fibers collected

Question 42

microfibers can create ? times more material

Answer 42

17

Question 43

lowrie and jackson

Answer 43

88% secondary transfer

Question 44

persistence

Answer 44

initial loss of 80% in first 4 hours. only 5-10% after 24hours

Question 45

robertson 82

Answer 45

longer fibers move easier than short

Question 46

pounds and smalldon 75 4th study (three states)

Answer 46

loosely bound, bound, strongly bound

Question 47

john glaister 31

Answer 47

cairo egypt, 1700 photomicrographs

Question 48

three parts of hair

Answer 48

cortex, cuticle, medulla

Question 49

living part of hair

Answer 49

follicle

Question 50

hair is made of

Answer 50

keratin

Question 51

outer layer of skin

Answer 51

epidermis

Question 52

just below epidermis

Answer 52

dermis

Question 53

tube shaped sheath around hair under skin

Answer 53

follicle

Question 54

goosebump muscle

Answer 54

arrector pili

Question 55

cell that produces melanin

Answer 55

melanocyte

Question 56

sack shaped gland that produces oily liquid onto the hair

Answer 56

sebacuous gland

Question 57

sudoriferous gland

Answer 57

sweat gland

Question 58

number of hair follicles on average person/head

Answer 58

5 million, 1 million

Question 59

number of actual hairs and growh

Answer 59

100-120K with growth up to 1/2 inch

Question 60

hair length is determined by what

Answer 60

anagen phase and genetics

Question 61

three stages

Answer 61

anagen catagen telagen

Question 62

how many hairs lost each day

Answer 62

50-150

Question 63

sign of decomposition in hair

Answer 63

postmortem root banding

Question 64

three types of animal hairs

Answer 64

vibrissa, bristle (guard), wool

Question 65

four types of human hair

Answer 65

primordial, lanugo, vellus, terminal

Question 66

primary or asexual hairs

Answer 66

replace lanugo hair

Question 67

secondary or sexual

Answer 67

replace vellus at puberty in pits and pubes

Question 68

pigmentation is made of

Answer 68

melanin

Question 69

melanin is made from

Answer 69

tyrosine

Question 70

black brown pigment

Answer 70

Eumelanin

Question 71

red yellow pigment

Answer 71

pheomelanin

Question 72

mixed melanins

Answer 72

just mixed

Question 73

color decide by

Answer 73

type and size of melanin granules

Question 74

three groups of animals

Answer 74

Domestic, commercial fur, deer family

Question 75

types of medulla (human)

Answer 75

fragmentary, discontinuous, continuous (amorphous)

Question 76

types of medulla (animal)

Answer 76

uniserial. multiserial ladder, vacuolated, lattice, amorphous

Question 77

three types of scales

Answer 77

coronal, spinous, imbricate