Hair and Fiber

Question 1

The absence of melanin creates what color of hair?

Answer 1

White

Question 2

What are the different types of medulla patterns found in human hair?

Answer 2

Intermittent/Interrupted
Fragmented
Continuous
Stacked
Absent

Question 3

What can you determine about an individual by examining their hair?

Answer 3

Human or Animal?
Race?
Origin of location on the body?
Forcibly removed or not?
Treatment with chemicals?
Drugs have been ingested or not?

Question 4

How can you tell if a hair has been forcibly removed?

Answer 4

Naturally shed hairs have undamaged roots, whereas forcibly removed hairs have stretched or are damaged.

Question 5

Why can’t a fiber be individualized to a particular piece of fabric?

Answer 5

Fibers have to be matched to the exact piece of clothing they came from for it to have an individual source; however, the chances of that happening are very minimal. Hence, they are classified as class evidence.

Question 6

5 synthetic fibers

Answer 6

Polyester
Nylon
Acetate
Acrylic
Spandex

Question 7

5 natural fibers

Answer 7

Silk
Cotton
Wool
Mohair
Cashmere

Question 8

What is the most common type of synthetic fiber?

Answer 8

Polyester

Question 9

What type of weave pattern does denim have?

Answer 9

Twill

Question 10

How do you distinguish between human and animal hair?

Answer 10

The human hair cuticle is routinely imbricate.
A animal hair cuticle has varied scale patterns.

Question 11

Human hair found at a crime scene is most likely to be in the:

Answer 11

telogen phase

Question 12

Anagen Phase

Answer 12

Growing Phase

Question 13

Catagen Phase

Answer 13

Transition Phase

Question 14

Telogen Phase

Answer 14

Resting Phase

Question 15

Nuclear DNA can be identified from:

Answer 15

hair root/follicle

Question 16

3 basic scale patterns in hair?

Answer 16

Rat, Cat, Human

Question 17

If there is no medulla in the hair being observed, it is said to be:

Answer 17

Absent

Question 18

Middle Layer that provides strength to the hair

Answer 18

Cortex

Question 19

Period in which the hair grows

Answer 19

Anagen

Question 20

Color pigment found in the hair and skin

Answer 20

Melanin

Question 21

Structure from which the hair grows

Answer 21

Follicle

Question 22

Oil Glands

Answer 22

Sebaceous

Question 23

Spongy interior core of the hair

Answer 23

Medulla

Question 24

Period in which the hair dies

Answer 24

Catagen

Question 25

Tough protein polymer that makes up the hair cortex

Answer 25

Keratin

Question 26

Outside covering of the hair shaft

Answer 26

Cuticle

Question 27

Study of form and structure

Answer 27

Morphology

Question 28

Usually made up of many filaments twisted or bonded together

Answer 28

Fiber

Question 29

Man-Made

Answer 29

Synthetic

Question 30

The lengthwise yarn

Answer 30

Warp

Question 31

A single strand of material

Answer 31

Filament

Question 32

A cloth material made up of fibers woven or bonded together

Answer 32

Fabric

Question 33

The crosswise yarn

Answer 33

Weft

Question 34

Simple and most common weave pattern

Answer 34

Plain

Question 35

Diagonal weave pattern; Ex:denim

Answer 35

Twill