Ch 11: Properties of the Hair & Scalp

Question 1

The scientific study of hair, its diseases, and care is called _____.

Answer 1

trichology

Question 2

The two parts of a mature strand of human hair are the _____.

Answer 2

hair root and hair shaft

Question 3

The tube-like depression or pocket in the skin or scalp that contains the hair root is the _____.

Answer 3

hair follicle

Question 4

Hair follicles are not found on the _____.

Answer 4

soles of the feet

Question 5

The _____ is the small, involuntary muscle in the base of the hair follicle.

Answer 5

arrector pili muscle

Question 6

The fatty or oily substance secreted by the sebaceous glands is _____.

Answer 6

sebum

Question 7

For chemicals to penetrate a healthy cuticle hair layer, they must have _____.

Answer 7

an alkaline pH

Question 8

The medulla is composed of _____ cells.

Answer 8

round

Question 9

During the _____ phase, new hair is produced because new cells are actively manufactured in the hair follicle.

Answer 9

anagen

Question 10

The major elements that make up human hair are carbon, oxygen, hydrogen, _____.

Answer 10

nitrogen, and sulfur

Question 11

The strong, chemical bonds that join amino acids are called _____.

Answer 11

peptide bonds

Question 12

Which type of melanin provides natural colors ranging from red and ginger to yellow and blonde tones?

Answer 12

Pheomelanin

Question 13

Asians tend to have _____ hair.

Answer 13

extremely straight

Question 14

To help minimize tangles in extremely curly hair when shampooing, you should use _____.

Answer 14

a detangling rinse

Question 15

Hair texture is classified as _____.

Answer 15

coarse, medium, or fine

Question 16

The measurement of the number of individual hair strands in one square inch (2.5 square centimeters) of the scalp is _____.

Answer 16

hair density

Question 17

Compared to hair with high porosity, chemical services performed on a hair with low porosity require _____.

Answer 17

more alkaline solutions

Question 18

Wet hair with normal elasticity will stretch up to _____ of its original length and return to that length without breaking.

Answer 18

50%

Question 19

Oily hair and scalp can be treated by properly washing with a _____.

Answer 19

normalizing shampoo

Question 20

Which type of hair almost never has a medulla?

Answer 20

Vellus

Question 21

During which phase does the follicle canal shrink and detach from the dermal papilla?

Answer 21

Catagen

Question 22

The average growth of healthy scalp hair is _____.

Answer 22

1/2 inch (1.25 cm) per month

Question 23

The technical term used to describe gray hair is _____.

Answer 23

canities

Question 24

A condition of abnormal growth of terminal hair in areas of the body that normally grow only vellus hair is _____.

Answer 24

hypertrichosis

Question 25

The technical term for dandruff is _____.

Answer 25

pityriasis

Question 26

Which of the five main structures of the hair root contain the blood and nerve supply that provides the nutrients needed for hair growth?

Answer 26

Dermal papilla

Question 27

Because there are so many of them, salt bonds account for about _____ of the hair's overall strength.

Answer 27

one third

Question 28

The anagen phase generally last from 3 to 5 _____.

Answer 28

years

Question 29

Scalp hair grows _____ on women than on men.

Answer 29

faster

Question 30

The _____ phase signals the end of the growth phase.

Answer 30

catagen

Question 31

Scalp massage _____ hair growth.

Answer 31

does not increase

Question 32

Compared to pigmented hair, gray hair is _____.

Answer 32

exactly the same

Question 33

Cross-sections of hair _____.

Answer 33

can be almost any shape

Question 34

Bald men are commonly perceived as _____.

Answer 34

less successful

Question 35

By age 35, almost _____ percent of both men and women show some degree of hair loss.

Answer 35

40

Question 36

Finasteride is an oral prescription medication for hair loss that is meant for _____.

Answer 36

men only

Question 37

Congenital canities exists _____.

Answer 37

at or before birth

Question 38

Dandruff can easily be mistaken for _____.

Answer 38

dry scalp

Question 39

Current research confirms that dandruff is the result of a _____.

Answer 39

fungus

Question 40

When the living cells of hair form and begin their journey upward through the hair follicle, they mature in a process called _____.

Answer 40

keratinization

Question 41

Tinea is characterized by _____, scales, and sometimes, painful circular lesions.

Answer 41

itching

Question 42

The infestation of the hair and scalp with head lice is called _____.

Answer 42

pediculosis capitis

Question 43

A carbuncle is similar to a furuncle but is _____.

Answer 43

larger

Question 44

Fine hair is _____ than coarse or medium hair.

Answer 44

more fragile

Question 45

Coarse hair _____.

Answer 45

is stronger than fine hair

Question 46

The _____ is the outermost layer of the hair.

Answer 46

hair cuticle

Question 47

The oil glands in the skin that are connected to the hair follicles are the _____ glands.

Answer 47

sebaceous

Question 48

A _____ bond is a weak, physical, cross-link side bond easily broken by water or heat.

Answer 48

hydrogen

Question 49

Hair is approximately _____ percent protein

Answer 49

90

Question 50

Total scalp hair loss is known as _____.

Answer 50

alopecia totalis

Question 51

Hypertrichosis is also known as _____.

Answer 51

hirsuties

Question 52

The naturally occurring fungus that causes the symptoms of dandruff when it grows out of control is _____.

Answer 52

malassezia

Question 53

The _____ is the lowest part of a hair strand.

Answer 53

hair bulb

Question 54

The technical term for a beaded hair is _____.

Answer 54

monilethrix

Question 55

A highly contagious skin disease caused by a parasite called a mite that burrows under the skin is _____.

Answer 55

scabies

Question 56

The term for the spiral shape of a coiled protein is _____.

Answer 56

helix

Question 57

Shaving, clipping, and cutting the hair on the head _____.

Answer 57

has no effect on hair growth

Question 58

Dry, sulfur-yellow, cup-like crusts on the scalp are called _____.

Answer 58

scutula

Question 59

The _____ are part of the integumentary system.

Answer 59

hair, skin, nails, and glands

Question 60

The long, of coarse, pigmented hair found on the scalp, legs, arms, and bodies of males and females is called _____.

Answer 60

terminal hair

Question 61

The technical term for knotted hair is _____.

Answer 61

trichorrhexis nodosa

Question 62

The _____ is the innermost layer of the hair and is composed of round cells.

Answer 62

medulla

Question 63

When hair leaves the follicles at an angle informs patterns or streams on the head, it is called _____.

Answer 63

a whorl

Question 64

The part of the hair located below the surface of the epidermis is the _____.

Answer 64

hair root

Question 65

A particular pattern of hair stream that is usually more noticeable in the front hairline in people with short, thick hair is a _____.

Answer 65

cowlick

Question 66

The ability of the hair to absorb moisture is called _____.

Answer 66

hair porosity

Question 67

The middle layer of the hair is the _____.

Answer 67

cortex

Question 68

An autoimmune disorder that causes the affected hair follicles to be mistakenly at attacked by a person's own immune system is _____.

Answer 68

alopecia areata

Question 69

Vellus hair is also known as _____.

Answer 69

lanugo hair

Question 70

The technical term for ringworm is _____.

Answer 70

tinea