Human Hair vs. Animal Hair
Random
Racial Differences
The Structure of Hair
Structure of the Hair Shaft
100
Pattern of pigments
What is one of the 3 key differences?
100
The ratio of the diameter of the medulla to the diameter of whole hair
What is the medullary index?
100
Generally straight or wavy
What is the appearance of European hair?
100
The hair shaft and the hair follicle
What is a single hair made up of?
100
The outer layer of the hair shaft
What is the cuticle?
200
Color is denser near the cuticle
Where is the color dense in human hair?
200
Trace evidence
What is hair?
200
Staight
How does the hair of Asians appear?
200
The actively growing root or base of a hair containing DNA and living cells
What is the hair follicle?
200
Scales that are flat and small
What does the human cuticle contain?
300
Color is denser toward the medulla
Where is the color denser in animal hair?
300
plucking, shaking, and scraping different surfaces
How do investigators collect hair?
300
Kinky, curly, or coiled
How does the hair of Africans appear?
300
Papilla, hair bulb, sebaceous gland, erector muscles
What is the hair follicle made up of?
300
Composed of pigments--called melanin
What is the cortex composed of?
400
Shape is inbricate
What is the cuticle shape of human hair?
400
Comparison microscopes, phase contrast microscopy, fluorescence microscopy, electron microscopes
What are the techniques and tools used?
400
Densely distributed
How are the pigment granules of Asians?
400
Protein keratin
What is the hair shaft made up of?
400
The biggest part of the hair shaft
What is the cortex?
500
Shape is coronal or spinous
What is the cuticle shape of animal hair?
500
head hair, eyebrows and eyelashes, beard and mustache hair, underarm hair, body hair, pubic hair
What are the six different regions for hair?
500
Small and evenly distributed
How are the pigment granules of Europeans like?
500
Cuticle, Cortex, Medulla
What does the structure of the hair shaft include?
500
The central core of the hair shaft
What is the medulla?
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