Week 3: Hair

Question 0

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

Answer 0

cuticle, cortex, and medulla

Question 1

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

Answer 1

hair

Question 2

cuticle

Answer 2

is one thick, scaly layer of the hair shaft

Question 3

cortex

Answer 3

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

Question 4

medulla

Answer 4

the innermost component of the hair shaft

Question 5

follicles

Answer 5

are sacs that hold the hair fibers

Question 6

arrector pili

Answer 6

tiny muscle attached to the hair follicle

causes the hair to stand in response to cold or stress

Question 7

piloerection

Answer 7

condition of the hair standing straight up

Question 8

fur

Answer 8

short, fine, soft hair

Question 9

pelt

Answer 9

skin in addition to fur or hair

Question 10

guard hairs

Answer 10

long, straight, stiff hairs that form the outer coat

also called PRIMARY or TOPCOAT

Question 11

secondary hairs

Answer 11

finer, softer, and wavy hair

also called the UNDERCOAT

Question 12

tactile hair

Answer 12

long, brittle, extremely sensitive hairs

usually located on the face

Question 13

vibrissae

Answer 13

long tactile hair

example: cat wiskers

Question 14

cilia

Answer 14

thin, short hairs

example: eyelashes

Question 15

simple pattern hair growth

Answer 15

guard hairs that grow from separate follicular openings

as in cattle

Question 16

compound pattern hair growth

Answer 16

multiple guard hairs that grow from single follicles

as in dogs

Question 17

shedding

Answer 17

normal hair loss