Properties of Hair + Scalp

Question 1

Name the 2 parts of a strand of hair

Answer 1

hair root and hair shaft

Question 2

The hair root is below or above the epidermis

Answer 2

below

Question 3

the hair shaft is below or above the epidermis

Answer 3

above

Question 4

what percent protein is hair

Answer 4

90%

Question 5

What is the process in which newly formed cells in a hair bulb mature

Answer 5

keratinization

Question 6

name the 3 growth phases of hair

Answer 6

anagen - growth phase; 3-5 years
catagen - transition phase; follicle canal shrinks and detaches
telogen - resting, lasts until hair is shed

Question 7

Male pattern baldness

Answer 7

androgenic alopecia

Question 8

minoxidil vs finasteride

Answer 8

minoxidil - topical
finasteride - oral prescription for men only

Question 9

gray hair is also known as

Answer 9

canities

Question 10

Dandruff caused by malassezia fungus

Answer 10

pityriasis

Question 11

ringworm; causes itching, scales, painful circular marks

Answer 11

tinea

Question 12

ringworm of scalp; red papules and spots at opening of follicle

Answer 12

tinea capitis

Question 13

dry sulfur yellow cuplike crusts on scalp

Answer 13

tinea favosa

Question 14

infestation of lice

Answer 14

pediculosis capitis

Question 15

furuncle vs carbuncle

Answer 15

furuncle - smaller; boil/bacterial infection of follicle
carbuncle - larger; inflammation of subcutaneous tissue caused by staph

Question 16

infection of follicles caused by staph; small white pimples

Answer 16

folliculitis

Question 17

For chemicals to penetrate a healthy cuticle layer they must have
a. no pH
b. a neutral pH
c. an alkaline pH
d. an acidic pH

Answer 17

c. an alkaline pH

Question 18

During the ______ phase, new hair is produced because new cells are actively manufactured in the hair follicle
a. anagen
b. catagen
d. telogen

Answer 18

a. anagen

Question 19

Compared to pigmented hair, gray hair is
a. exactly the same
b. softer
c. more resistant
d. less resistant

Answer 19

a. the same

Question 20

hair is approximately _____ % protein
a. 60
b. 70
c. 80
d. 90

Answer 20

d. 90

Question 21

the ______ is the lowest part of the hair strand
a. hair root
b. hair bulb
c. hair cuticle
d. hair follicle

Answer 21

b. hair bulb

Question 22

Unique protein structures within the cortex are responsible for the color and _____ of hair.
a. texture
b. length
c. elasticity
d. shine

Answer 22

c. elasticity

Question 23

The melanin granules found in fine hair texture are:
a. grouped tightly
b. smaller than those found in coarse hair
c. larger than those found in coarse hair
d. grouped loosely

Answer 23

a. grouped tightly

The melanin granules in fine hair are grouped more tightly, so the hair takes color faster and can look darker.