Forensics:hair, fiber, and paints

Hairs, Fibers, and Paint Chapter 8

Dermis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Accessory Organs of the Skin ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hair Follicles ,[object Object],[object Object],[object Object],[object Object]

Hair Follicle, cont’d. ,[object Object],[object Object],[object Object]

Morphology and Structure of Hair

Morphology: Cuticle ,[object Object],[object Object],[object Object],[object Object]

Morphology: Cortex ,[object Object],[object Object]

Morphology: Medulla ,[object Object]

Medullary Index ,[object Object],[object Object],[object Object],[object Object]

Medullary Index: How to figure it out…

Medulla Patterns ,[object Object],[object Object]

[object Object],[object Object]

Forensic Analysis of Medulla ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Identification and Comparison of Hair ,[object Object],[object Object],[object Object],[object Object],[object Object]

Morphology: Root ,[object Object]

Root: Anagen Phase ,[object Object],[object Object],Anagen hair root Root w/ follicular tag

Root: Catagen Phase ,[object Object],Catagen hair root

Root: Telogen phase ,[object Object],Telogen hair root

Types of hair: curly vs. straight

Hair in the anagen phase Electronmicrograph showing new hairs emerging from the hair follicles of the scalp

Telogen phase showing the “clubed” appearance

Appearance of the root of pulled human hair

Lice- nits (egg cases on hair shaft)

Matching hair using a comparison microscope

Important Forensic Questions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Fibers: Natural ,[object Object],[object Object],[object Object],[object Object],[object Object]

Man-Made Fibers ,[object Object],[object Object],[object Object]

Man-Made Fibers Con’t ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Polymers ,[object Object],[object Object],[object Object],[object Object]

ID and Comparison of Man-Made Fibers ,[object Object],[object Object],[object Object],[object Object],[object Object]

Tools and Techniques to Aid in Comparing Fibers ,[object Object],[object Object],[object Object],[object Object]

Forensic Examination of Paint ,[object Object],[object Object],[object Object]

Paint Characteristics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Tools and Techniques to Aid in Paint Examination ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Forensics:hair, fiber, and paints

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Forensics:hair, fiber, and paints