Hairs%2c%20Fibers%20and%20Paint

Hairs%2c%20Fibers%20and%20Paint - Hairs, Fibers and Paint...

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Hairs, Fibers and Paint Trace Evidence Analysis Methods in Forensic Science
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Hair Classifications Caucasoid - oval Negroid - flat Mongoloid - round
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Hair Morphology Cuticle – Outside covering (scales used to distinguish) Cortex – Pigment granules reside here Medulla – May or not be present; Appearance is characteristic of source
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Hair Growth Phases Anagen – First stage of growth; Root attached to follicle (flame-shaped) Catagen – 2 nd stage (mature hair); root is bulb-shaped as separation has begun Telogen – Final stage; Club-shaped root; Hair falls out
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Forcibly Removed? Anagen phase – Tissue tag probable Catagen phase – Possible tissue tag Telogen phase – Tissue tag improbable
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Hair Comparison Length Width Cross-sectional shape Scale count Pigmentation Chemical treatment Damage Parasites Source Age Sex Medullation
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Hairs%2c%20Fibers%20and%20Paint - Hairs, Fibers and Paint...

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