Ch. 11 Properties of the Hair & Scalp

Question 1

The study of hair is known as:

Answer 1

trichology

Question 2

A mature strand of human hair is divided into two principal parts known as the:

Answer 2

hair root and hair shaft

Question 3

What structure in the skin or scalp encases a hair root?

Answer 3

Hair follicle

Question 4

What is the lowest part of the hair strand?

Answer 4

hair bulb

Question 5

What structure is described as a small, cone-shaped elevation located at the bottom of the hair follicle?

Answer 5

dermal papilla

Question 6

What small involuntary muscle is attached to the underside of a hair follicle?

Answer 6

arrector pili

Question 7

Oil glands of the skin, connected to the hair follicles, are known as:

Answer 7

sebaceous glands

Question 8

Of the 20 amino acids that make up hair, a person must obtain__________of the essential amino acids from daily diet.

Answer 8

nine

Question 9

The three main layers of the hair shaft are the:

Answer 9

cuticle, cortex, and medulla

Question 10

What substance in the cortex gives natural color to the hair?

Answer 10

Melanin

Question 11

As newly formed cells mature, they fill up with a fibrous ______________, then move upward, lose their nucleus, and die. This process is called keratinization.

Answer 11

protein

Question 12

Normal hair contains______________percent of the element carbon.

Answer 12

51

Question 13

Normal hair contains_____________percent of the element oxygen.

Answer 13

21

Question 14

In the makeup of normal human hair, what COHNS element is present in the lowest percentage?

Answer 14

Sulfur

Question 15

The chemical bond that joins amino acids to each other is called a:

Answer 15

peptide bond

Question 16

In the cortex, a side bond that is easily broken by strong alkaline or acidic solutions is called a______bond.

Answer 16

salt

Question 17

The cortex contains coloring matter in the form of minute grains of_____________, or pigment.

Answer 17

melanin

Question 18

Pheomelanin provides natural hair colors from________________to yellow and blond tones.

Answer 18

red and ginger

Question 19

The shape of the hair strand, described as straight, wavy, curly, or extremely curly, is known as its:

Answer 19

wave pattern

Question 20

Short, fine, downy, unpigmented hair is known as____ hair.

Answer 20

vellus

Question 21

What place on the body would normally include vellus hair?

Answer 21

Eyelids

Question 22

Long, coarse, pigmented hair found on the scalp, legs, arms, and body is known as:

Answer 22

terminal hair

Question 23

All hair follicles have the same structure and cycle through the same three phases, which are:

Answer 23

anagen (growing), catagen (transitional), and teleogen (resting)

Question 24

The loss of hair in round or irregular patches without inflammation is known as:

Answer 24

alopecia areata

Question 25

What treatment has been scientifically proven to increase hair growth and is approved for that purpose by the Food and Drug Administration (FDA)?

Answer 25

Minoxidil

Question 26

Canities is the technical term for:

Answer 26

gray hair

Question 27

What type of hair is caused by the absence of melanin?

Answer 27

Gray hair

Question 28

The technical term for split ends is:

Answer 28

trichoptilosis

Question 29

The technical term for hair that is in a dry, brittle condition with nodular swellings along the hair shaft is:

Answer 29

trichorrhexis nodosa

Question 30

Monilethrix is the technical term for:

Answer 30

beaded hair

Question 31

A scalp condition characterized by red papules or spots at the opening of hair follicles is:

Answer 31

tinea capitis

Question 32

When a client exhibits signs of____________, salon service should be limited to referring the client to a physician for medical treatment.

Answer 32

scabies

Question 33

What contagious condition is caused by head lice?

Answer 33

pediculosis capitis

Question 34

What is the technical term for a boil - an acute, localized bacterial infection of the hair follicle that produces constant pain?

Answer 34

furuncle

Question 35

What term refers to an infection of the hair follicles frequently caused by staphylococcus or other bacteria?

Answer 35

folliculitis

Question 36

Hair texture refers to the________of the hair.

Answer 36

thickness or diameter

Question 37

The number of individual hair strands on one square inch of the scalp indicates hair:

Answer 37

density

Question 38

Hair with low porosity is considered:

Answer 38

resistant

Question 39

The strength of the side bonds that hold the hair's individual fibers in place is indicated by hair:

Answer 39

elasticity

Question 40

Hair that forms a circular pattern is called a:

Answer 40

whorl