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Biology of Hair
Hair Structure
Structures of Hair
100
Protein hair is made of
What is keratin
100
Central core (may be absent)
What is medulla
100
Ways the cortex varies
What is thickness, color, and texture
200
Structure hair is produced from
What is the follicle
200
Protein rich structure
What is cortex
200
how much light is able to pass through something
What is opacity
300
Influenced heavily by genes
What is hair shape and texture
300
outer coating
What is cuticle
300
one continuous structure or broken into pieces is one way medulla may vary. this is called what
What is continuity
400
Can influence physical appearance of hair
What is nutritional status / intentional alteration
400
useful to distinguish between different species but not individuals
What is cuticle or medulla
400
2 ways scales of cuticle vary
What is number per centimeter and how they overlap
500
Must be present for hair to be tested as DNA evidence
What is the root
500
most important component in determining from which individual a human hair may have come
What is distribution of cortex
500
2 more ways scales of cuticle vary
What is overall shape and how much they protrude from surface