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Hair 1 Evidence

Total questions: 65

Worksheet time: 2hrs 4mins

Name
Class
Date
1.
What cuticle pattern is shown?
a)
imbricate
b)
spinous
c)
coronal
2.
The central core of the hair is called the...?
a)
Medulla
b)
Cuticle
c)
Cortex
d)
Shaft
3.
Hair with a round cross section and a large diameter is classified as...?
a)
Asian
b)
African
c)
European
4.
Which gland secretes oil and causes hair to be oily?
a)
Sebaceous
b)
Adrenal
c)
Pineal
d)
Eccrine
5.

Hair analysis that does not include a tag or part of the follicle may be used to determine all of the following except:

a)

manner in which the hair was removed

b)

body region from which the hair came from

c)

broad racial background of the individual from which the hair came from

d)

identity of the individual from which the hair came from

6.
Rodent and bat hair has which type of cuticle?
a)
imbricate
b)
spinous 
c)
coronal
d)
elongate
7.
When being compared to a wooden pencil, which part of hair represents the lead?
a)
medulla
b)
cortex
c)
cuticle
d)
follicular tag
8.
The transitional or regressive stage that lasts a few weeks during which hair growth slows is called...?
a)
Anagen
b)
Telogen
c)
Catagen
d)
Metagen
9.
The hair follicle is dormant and hairs are easily lost during which stage of the hair life cycle?
a)
Anagen
b)
Telogen
c)
Catagen
d)
Metagen
10.
Hair is helpful in solving old crimes because…
a)
hair on a suspect never changes
b)
hair always contains DNA evidence
c)
hair takes little room to store in evidence closets
d)
hair does not easily decompose
11.

Small sacs of air found within the cortex are called...?

a)

central embolism

b)

cortical fusi < --- this is the right answer

c)

air granules

d)

oval bodies

12.
The hair shaft is composed of what important protein?
a)
Cellulose 
b)
Chitin
c)
Peptidoglycan
d)
Keratin
13.

The following medulla pattern is called

a)

fragmented

b)

continuous

c)

interrupted

d)

Absent

14.
What cuticle pattern is shown?
a)
imbricate
b)
spinous
c)
coronal
15.
What cuticle pattern is shown?
a)
imbricate
b)
spinous
c)
coronal
16.

Hair evidence would be categorized as what type of evidence?

a)

Individual and biological

b)

Individual and physical

c)

Class and biological

d)

Class and physical

17.

In the diagram above which letter would indicate the hair shaft?

a)

A

b)

B

c)

C

d)

D

e)

E

18.

In the diagram above, which letter would indicate the follicle?

a)

A

b)

B

c)

C

d)

D

e)

E

19.

In the diagram above which letter would indicate the root?

a)

A

b)

B

c)

C

d)

D

e)

E

20.

In the diagram the layer in which I would observe the cuticle scale pattern would be indicated by the letter

a)

A

b)

B

c)

C

21.

In the diagram the cortex would be indicated by the letter

a)

A

b)

B

c)

C

22.

In the diagram the medulla would be indicated by the letter

a)

A

b)

B

c)

C

23.

In which layer would pigment granules be found?

a)

A

b)

B

c)

C

24.

What power magnification should you use when you start looking at hair samples using OUR microscopes?

a)

10x

b)

40x

c)

100x

d)

400x

25.

Identify the scale pattern

a)

coronal

b)

imbricate

c)

spinous

26.

Identify the scale pattern

a)

coronal

b)

spinous

c)

imbricate

27.

Which cuticle scale pattern is generally found in human hair?

a)

coronal

b)

spinous

c)

imbricate

28.

Which cuticle scale pattern is NEVER found in human hair?

a)

imbricate

b)

spinous

c)

coronal

29.

Why did we make a cast with nail polish of the scale pattern rather than viewing it directly on the hair?

a)

The scales need to be glued down to avoid damaging them

b)

To avoid bubbles

c)

The nail polish dissolves the keratin

d)

The medulla or pigment granules may otherwise block the view of the scale pattern

30.

What is the primary forensic value of determining the hair scale pattern?

a)

Determining if the hair came from the head or the body

b)

Determining if nuclear or mitochondrial DNA is present in the sample

c)

Determining if the hair is likely from a human or animal

d)

Determining the ethnicity of the person it came from

31.

The medulla pattern shown would be

a)

absent

b)

fragmented

c)

continuous

d)

interrupted

32.

The medulla pattern shown would be

a)

absent

b)

continuous

c)

interrupted

d)

fragmented

33.

The medulla pattern shown would be

a)

absent

b)

continuous

c)

interrupted

d)

fragmented

34.

In which stage of hair growth would drug metabolites be stored in the hair shaft?

a)

anagen

b)

catagen

c)

telogen

35.

If a hair is forcibly removed, the root should appear

a)

Bent or pointed

b)

Flat or split

c)

Black and bent

d)

Rounded

36.

In which stage of hair growth can nuclear DNA be found in a hair sample?

a)

anagen

b)

catagen

c)

telogen

37.

Which characteristics are common in hair from people of European descent?

a)

Round shape, thick diameter, and unbroken medulla

b)

Oval shape and even pigment granules

c)

Flat shape, uneven pigmentation, pronounced twists and curves

38.

Which characteristics are common in hair from people of Asian descent?

a)

Round shape, thick diameter, and unbroken medulla

b)

Oval shape and even pigment granules

c)

Flat shape, uneven pigmentation, pronounced twists and curves

39.

Which characteristics are common in hair from people of African descent?

a)

Round shape, thick diameter, and unbroken medulla

b)

Oval shape and even pigment granules

c)

Flat shape, uneven pigmentation, pronounced twists and curves

40.

Why are characteristics based on ethnicity not very reliable?

a)

It is difficult to tell the characteristics apart under the microscope

b)

Dying hair will change the diameter of the hair

c)

Those of mixed ethnicity may show mixed characteristics

d)

Hair diameter changes due to environmental influences

41.

Hair grows at a rate of approximately

a)

0.5 cm a month

b)

1 cm a month

c)

1.3 cm a month

d)

3 cm a month

42.

Which sample would likely have nuclear DNA?

a)

A

b)

B

43.
The largest part of the hair shaft is called the...
a)
cuticle
b)
medulla
c)
cortex
d)
melanin granules
44.
Which of the following is/are function(s) of hair?
a)
Regulate body temperature
b)
Protect the skin from sunlight
c)
Decrease friction
d)
All of the above
45.
Rodent and bat hair has which type of cuticle?
a)
imbricate
b)
spinous 
c)
coronal
d)
elongate
46.
The period of active hair growth is called the ____ phase.
a)
catagen
b)
anagen
c)
telogen
d)
None of the above
47.
The phase where hair growth slows and the follicle begins to recede is called the ____ phase.
a)
anagen
b)
telogen
c)
catagen
d)
None of the above
48.

Hair viewed for forensic investigations is studied both microscopically and macroscopically. Microscopic characteristics include the

a)

pattern of the medulla

b)

pigmentation of the cortex

c)

types of scales on the cuticle

d)

All of these choices

49.

Since hair grows out of the skin, chemicals that the skin absorbs can become incorporated into hair. Ingested or absorbed toxins can be detected by chemical analyses of hair. These ingested or absorbed toxins include:

a)

arsenic

b)

lead

c)

drugs

d)

All of these choices

50.
Hair can be used to determine
a)
drug habits
b)
diet
c)
geographic history
d)
all of the above
51.

Hair proceeds through ___ stages as it develops.

a)

1

b)

3

c)

4

d)

6

52.

The _______ is the part of the hair that can be analyzed for nuclear DNA.

a)

shaft

b)

medulla

c)

follicle

d)

All of the above

53.

Whenever two objects are in contact, some transfer of material will occur. This is known as

a)

Transfer of Evidence

b)

Locard's Exhange Principle

c)

Simpson's Transfer Principle

d)

Principle of Contact

54.
People with different colors of hair tend to have different amounts of hair. Individuals with which hair color tend to have the most hair?
a)
Blonde
b)
Brunette
c)
Red
d)
Gray
55.
After getting up from your desk chair, you see that you transferred one of your hairs to the chair. This is an example of what?
a)
Primary Transfer
b)
Secondary Transfer
c)
Tertiary Transfer
d)
Quaternary Transfer
56.
Which gland secretes oil and causes hair to be oily?
a)
Sebaceous
b)
Adrenal
c)
Pineal
d)
Eccrine
57.
Hair analysis may be used to determine all of the following except:
a)
manner in which the hair was removed
b)
body region from which the hair came from
c)
broad racial background of the individual from which the hair came from
d)
identity of the individual from which the hair came from
58.
Human hairs generally have what two types of medulla?
a)
Continuous or interrupted
b)
Fragmented or none
c)
Solid or interrupted
d)
Fragmented or solid
59.

When collecting hairs from a suspect to compare to those found at a crime scene, how many control hairs should be collected from the head?

a)

1

b)

25

c)

50

d)

100

60.
Uncut, scissors, razor, and clippers all give unique shapes to what part of a hair?
a)
Cuticle
b)
Shaft
c)
Follicular tag
d)
Distal tip
61.
Why type of medulla is frequently found in the hairs of Native Americans and Asians?
a)
Continuous
b)
Interrupted
c)
Fragmented
d)
Solid
62.
Bleaching hair removes pigment granules and gives hair a...
a)
Shiny cuticle
b)
Dark cortex
c)
Yellow tint
d)
Grey shadow
63.
In order for hair to be considered individual evidence it must contain
a)
a complete medulla
b)
cells in its cortex
c)
nuclei in the cuticle
d)
a follicle
64.
hair always contains DNA
a)
true
b)
false
65.
Did this hair fall out naturally, or was it forcibly removed?
a)
Fell out naturally
b)
Was forcibly removed

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