Trichology

Question 1

The technical term for the study of hair is called…

Answer 1

Trichology

Question 2

When looking through a microscope, which portion of the hair would display living cells?

Answer 2

Hair bulb

Question 3

Hair grows from a tube-like “pocket” called a follicle or a/an

Answer 3

Root sheath

Question 4

The diameter of the hair fiber will be the same as…

Answer 4

The inside diameter of the hair follicle

Question 5

What is the natural flow of hair determined by?

Answer 5

The angle of the follicle

Question 6

The primary parts of the hair are the fiber and the…

Answer 6

Hair root

Question 7

What resembles the shape of a golf club and covers the follicle at the lower portion of the hair root?

Answer 7

Bulb

Question 8

Located at the bottom of the follicle and supplying nourishment to the germinal matrix is the…

Answer 8

Papilla

Question 9

The three major layers of the hair are…

Answer 9

Medulla, cortex, and cuticle

Question 10

The pigment that gives hair it’s color is found primarily in the…

Answer 10

Cortex

Question 11

The layer of hair consisting of unique protein structures that give hair most of its pigment and strength (elasticity) is called the…

Answer 11

Cortex

Question 12

The outer covering of the hair shaft made up of overlapping layers of transparent scales is called the…

Answer 12

Cuticle

Question 13

Hair that has been pulled out from the roots can grow back under what circumstance?

Answer 13

The papilla has not been destroyed.

Question 14

The central core of the hair shaft sometimes missing in fine or very fine hair is called the…

Answer 14

Medulla

Question 15

What helps protect the hair and skin from becoming too dry?

Answer 15

Sebum

Question 16

Oil glands are attached to the side of the…

Answer 16

Root sheath/follicle

Question 17

What is formed when sebum produced by the oil glands mixes with the body’s perspiration?

Answer 17

Acid mantle

Question 18

The muscle that causes the hair to stand on end when a person is scared or cold is known as the…

Answer 18

Arrector pili

Question 19

Hair is made up primarily of…

Answer 19

Protein

Question 20

Active growing stage of hair

Answer 20

Anagen stage

Question 21

The active growing stage of hair lasts how long?

Answer 21

2-6 years

Question 22

Catagen, a brief transitional stage of hair growth, lasts for what amount of time?

Answer 22

Only a few weeks

Question 23

The hair growth stage when all cell division stops is the…

Answer 23

Catagen stage

Question 24

The resting stage of hair growth when the hair bulb has no attached root sheath is referred to as…

Answer 24

Telogen stage

Question 25

Human hair, on average, grows about how much per month?

Answer 25

1/2"

Question 26

The lips, soles of feet, palms of hands and eyelids do not have...

Answer 26

Hair

Question 27

What is the technical term for eyelash hair?

Answer 27

Cilia

Question 28

What is the hard, resistant layer of protein that protects the hair shaft?

Answer 28

Cuticle

Question 29

The cross-section, or diameter, of the hair shaft is much larger in coarse hair than what type of hair?

Answer 29

Fine hair

Question 30

The large variety of hair color is influenced by the amount, size, type and distribution of...

Answer 30

Eumelanin and pheomelanin

Question 31

Gray hair is caused by...

Answer 31

Reduced color pigment, melanin, in the cortex of the hair

Question 32

The process of hair turning gray is usually caused by...

Answer 32

Natural aging process

Question 33

Degree of coarseness or fineness of the hair fiber is referred to as...

Answer 33

Texture

Question 34

Number of active hair follicles per square inch on the scalp refers to...

Answer 34

Density

Question 35

Ability of hair to absorb moisture, liquids or chemicals is known as...

Answer 35

Porosity

Question 36

If the layers of the cuticle are very close together, the hair has what type of porosity?

Answer 36

Resistant

Question 37

Hair that has been damaged by the environment or overprocessed has what type of porosity?

Answer 37

Extreme

Question 38

Wet hair is able to be stretched to what percent of its length?

Answer 38

40%-50%

Question 39

Small cracks starting at the cuticle and splitting the hair entirely are known as brittle hair, fragilitis crinium or...

Answer 39

Trichoptilosis

Question 40

Lumps or swelling along the hair shaft is known as knotted hair, nodosa, or...

Answer 40

Trichorrhexis

Question 41

Condition in which alternating bands of gray and dark hair exist

Answer 41

Ringed hair

Question 42

Abnormal coverage of hair on areas of the body where normally only lanugo or baby-fine hair appears is a condition known as...

Answer 42

Hypertrichosis

Question 43

A condition in which beads or nodes form on the hair shaft is called...

Answer 43

Monilethrix

Question 44

Chronic scalp condition with excessive flaking that accumulates in the scalp or falls to the shoulders is known as dandruff or...

Answer 44

Pityriasis

Question 45

Dry flakes attached to the scalp or on the hair, which can appear translucent are called...

Answer 45

Pityriasis capitis simplex

Question 46

What are the main purposes of hair?

Answer 46

Adornment, protection