Hair Anatomy: Forensic Science Quiz!

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| By Kwchiro

Kwchiro

Community Contributor

Quizzes Created: 40 | Total Attempts: 385,399

Questions: 8 | Attempts: 2,927 | Updated: Mar 22, 2023

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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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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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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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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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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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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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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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