Week 3: Hair Flashcards

0
Q

The hair shaft is the portion of the hair that extends beyond the skin surface and is composed of _____, ______, and _______.

A

cuticle, cortex, and medulla

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1
Q

The combining forms pil/i, pil/o, and trich/o means?

A

hair

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2
Q

cuticle

A

is one thick, scaly layer of the hair shaft

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3
Q

cortex

A

main component of the hair shaft
several layer thick
responsible for coat color

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4
Q

medulla

A

the innermost component of the hair shaft

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5
Q

follicles

A

are sacs that hold the hair fibers

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6
Q

arrector pili

A

tiny muscle attached to the hair follicle

causes the hair to stand in response to cold or stress

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7
Q

piloerection

A

condition of the hair standing straight up

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8
Q

fur

A

short, fine, soft hair

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9
Q

pelt

A

skin in addition to fur or hair

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10
Q

guard hairs

A

long, straight, stiff hairs that form the outer coat

also called PRIMARY or TOPCOAT

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11
Q

secondary hairs

A

finer, softer, and wavy hair

also called the UNDERCOAT

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12
Q

tactile hair

A

long, brittle, extremely sensitive hairs

usually located on the face

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13
Q

vibrissae

A

long tactile hair

example: cat wiskers

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14
Q

cilia

A

thin, short hairs

example: eyelashes

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15
Q

simple pattern hair growth

A

guard hairs that grow from separate follicular openings

as in cattle

16
Q

compound pattern hair growth

A

multiple guard hairs that grow from single follicles

as in dogs

17
Q

shedding

A

normal hair loss