properties of the hair and scalp

trichology

The study of hair is called

protection

The chief purposes of the hair are adornment and

eyelids

hair is not found on the palms of the hands, souls of the feet, lips, and

vellus

three types of hair on the body are classified as long hair, short or bristly hair, and

cilia

The technical term for eyelash hair is

keratin

hair is composed chiefly of

Color

The chemical composition of your hair varies with its

hair shaft

The two main divisions of the hair are the hair root and

below the skin surface

The hair root is located

the papilla

The three main structures associated with the hair root are the follicle, the bulb, and

follicle

The hair root is encased by a tube like depression in the skin known as the

flows to one side

follicles are set at an angle, so the hair above the surface

bulb

The club shaped structure that forms the lower part of the hair root is the

at the bottom of the follicle

The papilla is located

arrector pili

The small involuntary muscle attached to the under side of the follicle is known as the

sebaceous glands

Oil glands are also known as

sebum

The oily substance secreted from the oil glands is called

hair follicles

oil glands are connected to

medulla

The three layers of the hair are the cuticle, cortex, and

The inner structure of the hair

The cuticles scalelike cells protect

cortex

hair pigment is found in the ____ layer

medulla

The innermost layer of the hair is referred to as the pith, marrow, or

grow again

if hair is pulled out from the roots, it will

never grow again

if the papilla is destroyed, the hair will

every 4 to 5 months

eyebrows and eyelashes are replaced

The cortex

the natural color of hair, it’s strength, and it’s texture depend mainly on

albino

A person born with an absence of coloring matter in the hair shaft, and no marked pigment coloring in the skin or irises of the eyes is a/an

grows that way from the bulb

Grey hair

The natural aging process

in most cases, gray hair is caused by

terminal

Long, thick pigmented hair is known as

curly

vellus hair is

telogen

The three phases of hair growth are anagen, catagen, and

anagen

The growing phase of hair is known as

Half an inch per month

hair grows approximately

90

at any one time ____ percent of our hair is growing

2 to 6 years

hair continues to grow for a period of

catagen

The transitional phase of hair growth is known as

1-2 weeks

The transitional phase of hair growth lasts approximately

decreases in volume

during catagen the follicle

hair follicle

The lower part of the ____ is destroyed during the transitional phase of the hair life cycle

telogen

The resting phase of the hair growth cycle is known as

2-6 months

the resting phase of the hair growth lasts approximately

10

about _____ percent of the hair is in the resting phase at any one time

40-100 hairs

average daily hair loss is approximately

100,000

The average head has about _____ individual shafts of hair

90,000

redheads have approximately _____ shafts of hair on the head

hair stream

hair flowing in the same direction is the

circular pattern

a whorl is formed when hair grows in a

is standing up

A cowlick is formed when a tuft of hair

hair grows after death

one common hair myth is

almost flat

The three hair shapes are round, oval, and

round

straight hair has a ____ shape

The direction of a hair as it projects out of the follicle

The true guide for a hair shape is

analyzed

A client’s hair must be ____ before any service

taste

The only one of the five senses not used when analyzing the hair is

degree of coarseness or fineness

hair texture refers to the hairs

coarse

____ hair has the greatest diameter

flat cuticle scales

wiry hair may have a hard, glassy finish caused by

porosity

The hair’s ability to absorb moisture is the

poor porosity

resistant hair is said to have

damage from faulty treatments

Extreme porosity may be caused by

elasticity

The ability of the hair to stretch and return to its original form without breaking is known as

wet

hair can be stretched 40 to 50% when

poor porosity

it may take a longer amount of time for chemicals to penetrate hair with

androgenic alopecia

scientist believe approximately 95% of hair loss is caused by a progressive condition called

40

by age 35, almost _____ percent of men show some degree of hair loss

inherited from either side of the family or both sides

The gene for the most common type of hair loss may be

male pattern baldness

in men, a horseshoe shaped fringe affair is referred to as

androgenic alopecia

A miniaturization of certain scout follicles contributes to

vellus like follicles

The hair loss process is a gradual conversion of terminal hair follicles to

does not alter the number of follicles

androgenic alopecia

sudden hair loss in round or irregular patches

alopecia areata is defined as

can be reversed

telogen effluvium

traumatic alopecia

excessive application of chemicals or excessive use of hot combs may cause

androgenic alopecia

asking questions about a client’s family history with hair loss helps identify

pointy ends

The cosmetologist may recognize miniaturized hair on a client scalp by their

A smaller diameter ponytail

in women, androgenetic alopecia may be recognized by

3-5

when testing for telogen effluvium, if more than ___ hairs come out easily, the client has active shedding and may be going through telogen effluvium

2 to 4 months

when evaluating hair loss, the time lapse between evaluations should be

pattern and density

the degree of hair loss in men can be evaluated by rating

vertex

in male pattern baldness, the scalp is divided into the front, the mid area, and the

monoxidil

A topical solution applied to the scalp that is medically proven to regrow hair is

allows longer and thicker hair to grow

enlarging miniaturized follicles and reversing the miniaturization process prolongs the growth phase of the hair cycle and

finasteride

A prescription pill for the treatment of androgenetic alopecia is

canities

The technical term for gray hair is

ringed hair

Alternate bands of grey and dark hair is called

hypertrichosis

The condition characterized by an abnormal development of hair on areas of the body normally bearing only vellus hair is known as

split ends

trichoptilosis is the technical name for

nodular swellings along the hair shaft

trichorrhexis nodosa may be identified by

monilethrix

The technical term for beaded hair is

brittle hair

fragilitis crinium is identified by

pityriasis

The medical term for dandruff is

pityriasis capitis simplex

an itchy scalp with small white scale either attached to the scalp in masses or scattered loosely in the hair is an indication of

greasy dandruff

pityriasis steadoides is also referred to as

fungi

tinea is commonly carried by scales or hairs containing

tinea

the medical term for ringworm is

tinea capitis

red papules, or spots, at the opening of the hair follicles are symptoms of

dry, sulfur yellow, cup like crusts on the scalp

tinea favosa may be identified by

the itch mite

scabies is caused by

head lice

pediculosis is caused by