Ch.11 textbook flash cards

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6 Terms

1
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Arrector pili muscle

Small involuntary muscle “goosebumps”

2
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Sebaceous Glands

Oil glands in the skin connected to hair follicle

3
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Sebum

Fatty oily substance that comes from sebaceous glands

4
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Hair cuticle

Outermost layer of the hair, single overlapping layer of transparent, scale like cells: acts as a barrier

5
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Hair cuticle

6
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Cortex

Middle layer fibrous protein core formed by elongated cells contains melanin pigments 90% of hair weight, elasticity, and natural color