Hair Anatomy: Forensic Science Quiz!

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| By Kwchiro

Kwchiro

Community Contributor

Quizzes Created: 40 | Total Attempts: 405,977

Questions: 8 | Attempts: 3,068 | Updated: Mar 22, 2023

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Hair Anatomy: Forensic Science Quiz! - Quiz

Explore the intricacies of hair anatomy relevant to forensic science. This quiz assesses knowledge on DNA presence, hair shaft structure, and keratin presence in various biological structures, enhancing understanding in forensic methodologies.

Questions and Answers

1.

Does this hair have nuclear DNA? If yes, which section(s)?
- A.
  
  Yes, it has nuclear DNA in A, B and C
- B.
  
  Yes, it has nuclear DNA in A.
- C.
  
  Yes, it has nuclear DNA in B
- D.
  
  Yes, it has nuclear DNA in C
- E.
  
  No, it does not have nuclear DNA
Correct Answer
D. Yes, it has nuclear DNA in C

Explanation
Nuclear DNA will be found when a hair is pulled from the head with skin cells attached (C) -- the follicular tag.

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1
2.

Which portion of the hair is the shaft?
- A.
  
  A is the hair shaft
- B.
  
  B is the hair shaft
- C.
  
  C is the hair shaft
Correct Answer
A. A is the hair shaft

Explanation
A is the hair shaft. B is the root. C is the follicular tag (skin cells) that is attached to the hair root.

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2
3.

Which of these structures are keratin? I: Nails II: Hair III: Feathers
- A.
  
  I, only
- B.
  
  II, only
- C.
  
  I and II, only
- D.
  
  I, II and III
Correct Answer
D. I, II and III

Explanation
Keratin is the main protein in hair. It is also found in nails and bird feathers.

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2
4.

Which portion is the hair shaft?
- A.
  
  A
- B.
  
  B
- C.
  
  D
- D.
  
  F
Correct Answer
A. A

Explanation
The portion above the skin is the hair shaft.

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5.

Look at this hair shaft. Which portion is the cuticle?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
Correct Answer
A. A

Explanation
The cuticle is the outer portion of the hair shaft.

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1
6.

Which portion of the hair shaft is the medulla?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
Correct Answer
C. C

Explanation
The medulla is the inner most portion of the hair shaft. It is NOT present on all human hairs.

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2
7.

Which portion of the hair shaft is the cortex?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
Correct Answer
B. B

Explanation
The cortex is below the cuticle.

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1
8.

Toxicology can determine the drug timeline in hair. If the hair is 7 inches long, how many months can the toxicology evaluate?
- A.
  
  7 months
- B.
  
  3 1/2 months
- C.
  
  14 months
- D.
  
  7 years
Correct Answer
C. 14 months

Explanation
A hair grows approximately 1/2 inch per month, so if the hair is 7 inches long, that represent 14 months.

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1