Chapter 12 Flashcards by Delaney Ray

Q

Follicle

A

Structure within which hair grows

roughly cylindrical tube with larger pit

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Q

Hair made of

A

Keratin

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Q

Keratinization

A

hardening process of hair

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Q

hair muscles called

A

Pili Arrector

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Q

Growth phase Anagen

A

active growing
new cells, pushes up hair shaft
produce melanin

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Q

Resting phase Catagen

A

no more cells

root into bulb shape

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Q

resting phase telogen

A

no more cell, root help in place

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Q

Forcible removal?

A

root stretches and follicular tissue attached

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Q

anatomy of a hair

A

root
shaft
rip

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Q

root

A

portion was in follicle

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Q

shaft

A

main portion of hair

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Q

tip

A

distal-most portion

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Q

Micro anatomy

A

cuticle
cortex
medulla

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Q

Cuticle

A

spindle-shaped cells called fusiform

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Q

Imbricate

A

scale pattern of human

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Q

bubbles in cortex

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A

cortical fusi

Q

ovoid bodies

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A

large pigment granules

Q

cortical or medullary disruptions

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A

small explosion in middle of hair

Q

Guard hairs

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A

still hair’s on animals

shield

Q

Vibrissa

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A

whiskers

Q

buckling

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A

abrupt change in direction kf hair

Q

shouldering

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A

asymmetrical cross-sections of hair

Q

three main ancestral groups

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A

europeans
african
asian

Q

Pili annulati

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A

hair’s with colored rinfs

monilethrix

string of beads

Pili Torti

twisting of the hair along length