Hair and Fibers The Forensics of Hair The Structure of Hair Fibers 1 Fibers 2 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400 500 500 500 500

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

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

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?

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

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

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

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

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

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

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?

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

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

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

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

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

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

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

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

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

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