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Forensic Science Fundamentals and Investigations

Criminal Justice

Quiz 3 :

Hair Analysis

Quiz 3 :

Hair Analysis

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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:
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A

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

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

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When humans are born, they have about:
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All mammals have hair.Its main purpose is to:
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Hair viewed for forensic investigations is studied both macroscopically and microscopically.Microscopic characteristics include the:
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Bits of pigment found in the cortex of a hair is called melanin granules.
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A type of protein made up of a chain of amino acids that makes hair both strong and flexible is:
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The region of a hair located outside of the medulla containing granules of pigment is called:
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Hair is considered:
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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:
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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:
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Hair can adhere to clothes, carpets and many other surfaces and be transferred to other locations.This is called:
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In humans, the cortex is the largest part of the hair shaft.
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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:
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The central core of a hair fiber is called the ___________________________ .
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The cuticle is a transparent inner layer of the hair shaft.
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Animal hair and human hair have several differences including:
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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:
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Investigators recognized the importance of analysis of hair as:
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