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Hair Tests > Hair Test 3&4 > Flashcards

Hair Test 3&4 Flashcards

0
Q

A club shaped structure at the bottom of the hair follicle that completely surrounds the papilla is the what

A

Hair bulb

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1
Q

A small cone-shaped piece of the dermis bulges up into the bottom of the hair follicle forming the what

A

Hair papilla

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2
Q

Oxygen, amino acids and nutrients needed for the production of hair reach the stem cells through the what

A

Papillary capillaries

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3
Q

The epidermis grows downward into the dermal tissue creating a pocket called the what

A

Hair follicle

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4
Q

Which saccular gland is attached to the side of the hair follicle

A

Sebaceous

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5
Q

The madulla layer of the hair has what..

A

Has no known function

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6
Q

The outermost layer of the hair is the

A

Cuticle

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7
Q

The layer of the hair that acts as an outside barrier is the what

A

Cuticle

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8
Q

The layer of the hair where most melanin is found

A

Cortex

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9
Q

Which type of hair does not always have three layers

A

Fine

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10
Q

What percentage of the weight of the hair does the cortex make up

A

75-90%

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11
Q

The portion of the hair above the skins surface

A

Hair shaft

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12
Q

Whenever a product with an alkaline pH is used it will increase the hairs what

A

Porosity

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13
Q

What layer of the hair is translucent and contains no melanin

A

Cuticle

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14
Q

What are the building blocks of all proteins

A

Amino acids

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15
Q

‘What’ is the chemical cross bond found in the hair

A

Cystine bond

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16
Q

‘What’ is the chemical bond that must be broken and reformed when doing a permanent wave or hair relaxer.

A

Cystine bond

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17
Q

What is the growth cycle of hair

A

Anagen

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18
Q

The average growth cycle of hair usually last

A

5-7 yrs

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19
Q

What is the short, very fine hair found on the body

A

Vellus

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20
Q

Shaving will cause the hair to grow at a faster rate.. T or F

A

False

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21
Q

Which type of hair would look the flattest when looking at a cross sectional view of it

A

Very curly

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22
Q

What is the average moisture content of dry hair

A

5-10%

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23
Q

Which type of melanin produces the black to brown shades

A

Eumelanin

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24
Q

Which color of the hair has the larger color molecules

A

Black

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25
Q

What refers to how many hairs grow in a square inch

A

Density

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26
Q

Which shade of hair has the lowest density.

A

Red

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27
Q

Which shade of hair usually has the highest density

A

Blonde

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28
Q

Healthy wet hair can be stretched up to what percent without damage

A

50%

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29
Q

The average head has approximately how many shafts of hair

A

100,000

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30
Q

Scalp hair grows faster on men than women.. T or F

A

False

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31
Q

Hair usually grows faster in the summertime

A

True

32
Q

Added water can cause the hair to swell as much as

A

10

33
Q

The special cells responsible for the production of melanin are called

A

Melanocytes

34
Q

What has the highest percentage of all the elements found in the hair

A

Carbon

35
Q

Hair usually has a what % content of the element sulfur

A

4-8%

36
Q

Natural what tones of hair, usually have the highest content of the element sulfur

A

Red

37
Q

During the anagen phase, new hair is produced from special cells called what cells

A

Stem

38
Q

Is hair a living cell after the hair shaft pushes above the skins surface

A

No

39
Q

In relation to other layers of the hair, the medulla layer has

A

No known function

40
Q

The great strength of the hair is directly related to the nature of the

A

Cortex

41
Q

An important function of the hair cuticle is to

A

Protect the cortex

42
Q

Simple proteins are

A

Easily digested

43
Q

Cross-links are formed by a unique amino acid called

A

Cystine

44
Q

Fiber proteins are

A

Non-digestible

45
Q

The hair follicle’s resting stage is called its

A

Telogen phase

46
Q

Primary terminal hair is the short, thick hairs that grow on the what and what.

A

Eyebrows and eyelashes

47
Q

White hair has no melanin or oxymelanin.. T or F

A

True

48
Q

When two cystine amino acids link together they form a disulfide link between adjacent polypeptide chains known as a what bond

A

Cystine

49
Q

Name the chemical cross bond that must be broken and reformed when doing a permanent wave or hair relaxer

A

Salt bond

50
Q

Which shade of hair usually has about 90,000 hairs

A

Red

51
Q

Which gland is attached to the side of the hair follicle

A

Sebaceous

52
Q

The middle layer of the hair is know as the

A

Cortex

53
Q

Name the small cone-shaped elevation of the dermis at the bottom of the hair follicle

A

Hair papilla

54
Q

The portion of hair above the skins surface is called the

A

Hair stem or shaft

55
Q

Name the club-shaped structure that forms the lower part of the hair root

A

Hair bulb

56
Q

What layer of the hair contains no melanin

A

Cuticle

57
Q

What are the building block of all proteins

A

Amino acids

58
Q

What is the chemical cross bond found in the hair

A

Di-sulfide

59
Q

Name the area of special reproducing cells, on the outer portion of the hair papilla

A

Germinal matrix

60
Q

The average growth cycle of hair usually last

A

4-7years

61
Q

Name the short very fine hair found on the body

A

Secondary

62
Q

Shaving will cause hair to grow at a faster rate

A

False

63
Q

Which type of pigment produces red to yellow melanin

A

Oxymelanin

64
Q

Chemical cross bonds are formed by a unique amino acid called

A

Cystine

65
Q

Name a tube like depression or pocket in the skin that encases the hair root

A

Hair follicle

66
Q

Name the long soft hair found on the scalp

A

Tertiary

67
Q

Which shade of hair has about 140,000 hairs on the scalp

A

Blonde

68
Q

Hair is made of

A

Hard keratin

69
Q

The special cells responsible for the production of melanin are called

A

Melanocytes

70
Q

What is the average percent of sulphur found in the hair

A

9 to 12

71
Q

Oxygen, amino acids and nutrients needed for the production of hair reach the germinal matrix through the what

A

Papillary capillaries

72
Q

The degree of courseness is called

A

Texture

73
Q

Is hair a living cell after the hair shaft pushes above the skins surface

A

No

74
Q

Short coarse, bristly hairs found on the body are known as

A

Terminal hair

75
Q

Hair gets its shape size and direction from the

A

Hair follicle

76
Q

The ability of the hair to absorb moisture is know as

A

Porosity

77
Q

An important function of the hair cuticle is to

A

Protect the cortex

Hair Tests (1 decks)

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