Quiz 2

Question 1

Hair is primarily composed of?

Answer 1

Proteins (80%)

Question 2

They are hard fibrous proteins

Answer 2

Keratin

Question 3

Keratin protein is comprised of what we call as

Answer 3

polypeptide chains

Question 4

They are produced inside the hair follicle and packed into granules found in the fibers.

Answer 4

Melanin

Question 5

The dominant pigment in brown hair, and black hair

Answer 5

Eumelanin

Question 6

the dominant pigment in red and blonde hair

Answer 6

Phenomelanin

Question 7

Average total number of scalp hairs is
Average rate of growth is

Answer 7

100,000
0.35 mm/day

Question 8

Hair grows faster in summer than in winter. T/F

Answer 8

True

Question 9

Average daily loss is 25-100 hairs/day. Fastest growth is between 20-30 years old.
Male hair grows faster than female hair. T/F

Answer 9

True
False (15-30)
False (Female grows faster)

Question 10

long, thick, pigmented hair
found on scalp, legs, arms and
body

Answer 10

Terminal hair

Question 11

short, fine, down, unpigmented hair on body

Answer 11

Vellus (Lanugo) hair

Question 12

It determines the shape of the hair

Answer 12

Hair Shaft

Question 13

If the shaft is round, the hair is ______
If the shaft is oval, the hair is _______
If the shaft is flat, the hair is _____ or _____

Answer 13

Straight
Wavy
Curly or Kinky

Question 14

What are the most dominant and rarest hair color

Answer 14

Black - Most
Red - Rare

Question 15

She has the longest hair on record

Answer 15

Asha Mandela

Question 16

A flexible thin keratin thread with great
strength and elasticity. It is present on almost all surfaces of the human skin.

Answer 16

Hair

Question 17

Parts of the body where hair does not grow

Answer 17

Palms
Soles
Vermillion zone of lips
Parts of genitals

Question 18

The outermost layer of the hair. It consists of a single layer of transparent, scale like cells that overlap like shingles on a roof

Answer 18

Cuticle

Question 19

• The middle layer of hair; a fibrous protein core formed by elongated cells containing melanin pigment. About 90 percent of hair weight comes from this.

Answer 19

Cortex

Question 20

Innermost layer; also referred to as the
pith (Core) of the hair. It is composed of
round cells

Answer 20

Medulla

Question 21

Very fine and naturally blonde
hair may not even have a medulla. T/F

Answer 21

True

Question 22

Growth period is 2-5 years before replacement

Answer 22

Active-Growth Phase (Anagen)

Question 23

Lasts one to two weeks and hair follicle shrinks about 80%.

Answer 23

Transition Phase (Catagen)

Question 24

After five or six weeks, dermal papilla reconnects to base of hair follicle and bloodstream. The hair re-enters the active-growth phase and a new hair begins to from.

Answer 24

Resting Phase (Telogen)