Question 1

A classic 1883 text on forensic science, The Principles and Practice of Medical Jurisprudence by Alfred Swaine Taylor and Thomas Stevenson contains a chapter on using:

Accepted Answer

A)  soil in forensic investigations.
B)  weapons in forensic investigations.
C)  hair in forensic investigations.
D)  clothing in forensic investigations. C

Question 2

The hair shaft is made up of three layers: an outer medulla, a cortex, and an inner cuticle.

Accepted Answer

A) True 
 B)False  False

Question 3

Investigators recognized the importance of analysis of hair as:

Accepted Answer

A)  trace evidence in criminal investigations in the late 1800s.
B)  secondary evidence in criminal investigations in the late 1880s.
C)  primary evidence in criminal investigations in the late 1880s.
D)  direct evidence in criminal investigations in the late 1880s. A

Question 4

Forensic scientists distinguish __________________ types of hair on the human body.

Accepted Answer

The answer of Forensic scientists distinguish __________________ types of hair...

Question 5

A type of protein made up of a chain of amino acids that makes hair both strong and flexible is:

Accepted Answer

A)  keratin.
B)  protein.
C)  cuticle.
D)  None of these choices.

Question 6

When humans are born, they have about:

Accepted Answer

A)  5 million hair follicles, only two percent of which are on the head.
B)  10 million hair follicles, only two percent of which are on the head.
C)  5 million hair follicles, only five percent of which are on the head.
D)  10 million hair follicles, only five percent of which are on the head.

Question 7

A hair consists of two parts: a follicle and a shaft.

Accepted Answer

A) True 
 B)False

Question 8

Animal hair and human hair have several differences including:

Accepted Answer

A)  the pattern of pigmentation.
B)  the medullary index.
C)  the cuticle type.
D)  All of these choices.

Question 9

Bits of pigment found in the cortex of a hair is called melanin granules.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)  pattern of the medulla.
B)  pigmentation of the cortex.
C)  types of scales on the cuticle.
D)  All of these choices.

Question 11

The rate of hair growth is important to know because it can help determine the last time hair was chemically treated.Human hair grows at which rate:

Accepted Answer

A)  1.3 cm per day.
B)  1.3 cm per week.
C)  1.3 cm per month.
D)  1.3 cm per year.

Question 12

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

Accepted Answer

The answer of Whenever two objects are in contact, some...

Question 13

The cuticle of human hair is described as ____________________________________ .

Accepted Answer

The answer of The cuticle of human hair is described...

Question 14

In 1910 a comprehensive study of hair titled The Hair of Man and Animals was published by the French forensic scientists, Victor Balthazard and Marcelle Lambert.This text includes numerous microscopic studies of hair from:

Accepted Answer

A)  most animals.
B)  most domesticated animals.
C)  human beings.
D)  None of these choices.

Question 15

Hair can adhere to clothes, carpets and many other surfaces and be transferred to other locations.This is called:

Accepted Answer

A)  secondary transfer.
B)  primary transfer.
C)  tertiary transfer.
D)  redundant transfer.

Question 16

In humans, the cortex is the largest part of the hair shaft.

Accepted Answer

A) True 
 B)False

Question 17

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:

Accepted Answer

A)  arsenic.
B)  lead.
C)  drugs.
D)  All of these choices.

Question 18

Many dyes and other hair treatments will fluoresce under a certain color (wavelength) of light.In a fluorescence microscope, a beam of light of a certain wavelength is used.If the sample contains particular chemicals, it will absorb some of the light and then reemit light of a different wavelength.This is called:

Accepted Answer

A)  fluorescence.
B)  effervescence.
C)  incandescence.
D)  None of these choices.

Question 19

The region of a hair located outside of the medulla containing granules of pigment is called:

Accepted Answer

A)  the cuticle.
B)  the cortex.
C)  the hair follicle.
D)  None of these chances.

Question 20

Hair proceeds through __________________ stages as it develops.

Accepted Answer

The answer of Hair proceeds through __________________ stages as it...

Exam 3: Hair Analysis

A classic 1883 text on forensic science, The Principles and Practice of Medical Jurisprudence by Alfred Swaine Taylor and Thomas Stevenson contains a chapter on using:

The hair shaft is made up of three layers: an outer medulla, a cortex, and an inner cuticle.

Investigators recognized the importance of analysis of hair as:

Forensic scientists distinguish __________________ types of hair on the human body.

A type of protein made up of a chain of amino acids that makes hair both strong and flexible is:

When humans are born, they have about:

A hair consists of two parts: a follicle and a shaft.

Animal hair and human hair have several differences including:

Bits of pigment found in the cortex of a hair is called melanin granules.

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

The rate of hair growth is important to know because it can help determine the last time hair was chemically treated.Human hair grows at which rate:

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

The cuticle of human hair is described as ____________________________________ .

In 1910 a comprehensive study of hair titled The Hair of Man and Animals was published by the French forensic scientists, Victor Balthazard and Marcelle Lambert.This text includes numerous microscopic studies of hair from:

Hair can adhere to clothes, carpets and many other surfaces and be transferred to other locations.This is called:

In humans, the cortex is the largest part of the hair shaft.

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:

The region of a hair located outside of the medulla containing granules of pigment is called:

Hair proceeds through __________________ stages as it develops.