1. Hair and Fibers
The Forensics of Hair
The Structure of Hair
Fibers 1
Fibers 2
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©Norman Herr, 2003

3. A-100
ANSWER: the protein found in hair
QUESTION: What is keratin?

4. A-200
ANSWER: this type of microscope allows for simultaneous viewing of questioned hairs and known hairs
QUESTION: What is a comparison microscope?

5. A-300
ANSWER: hairs found in this area of the body are usually the longest and are uniform in diameter
QUESTION: What is the head?

6. A-400
ANSWER: this phase of hair growth is when the hair is actively growing
QUESTION: What is the Anagen phase?

7. A-500
ANSWER: this phase of hair growth is when hairs are normally shed
QUESTION: What is the telogen phase?

8. B-100 ANSWER: hair is composed of this many principal parts
QUESTION: What is 3?

9. B-200
ANSWER: this is the outer coating of hair, composed of overlapping scales.
QUESTION: What is the cuticle?

10. B-300 ANSWER: this is the central core of hair
QUESTION: What is the medulla?

11. B-400
ANSWER: this is the protein-rich structure around the medulla that contains pigment
QUESTION: What is the cortex?

12. B-500
ANSWER: the distribution of this part of the hair is the most important component in determining from which individual a hair may have come.
QUESTION: What is the cortex?

13. C-100 ANSWER: fibers can be man-made or this
QUESTION: What is natural?

14. C-200 ANSWER: these fibers can be derived from animal or plant sources
QUESTION: What is natural?

15. C-300
ANSWER: the most common plant fiber
QUESTION: What is cotton?

16. C-400 ANSWER: this was the first man-made fiber
QUESTION: What is rayon?

17. C-500
ANSWER: this type of man-made fiber is made from natural raw materials
QUESTION: What is regenerated?

18. D-100 ANSWER: these basic units repeat to form a polymer
QUESTION: What is a monomer?

19. D-200
ANSWER: wool, fur, and mohair are examples of this type of natural fiber
QUESTION: What is an animal fiber?

20. D-300
ANSWER: the dye composition of a fiber can be analyzed with this laboratory technique
QUESTION: What is chromatography?

21. D-400
ANSWER: this type of man-made fiber is made from synthetic materials
QUESTION: What is a synthetic fiber?

22. D-500
ANSWER: rayon and acetate are examples of this type of man-made fiber
QUESTION: What is a regenerated fiber?