Upgrade to remove ads
Only $2.99/month

Chapter 7 Trichology

Terms in this set (79)

What is NOT a main purpose of hair?
support
The technical term for the study of hair?
trichology
When looking through a microscope, which portion of the hair would display living cells?
hair bulb
Hair grows from a tube-like "pocket" called a root sheath or a
follicle
The diameter of a hair fiber will be the same as
the inside diameter of the hair follicle
what is the natural flow of hair determined by?
the angle of the follicle
the two primary parts of hair are the hair fiber and the
hair root
what is the portion of hair that extends above the skins surface
hair fiber
What resembles a golf club and covers the follicle at the lower portion of the hair root?
bulb
located at the bottom of the follicle and supplying nourishment to the germinal matrix is the
papilla
the three major layers of the hair are the medulla, cortex and
cuticle
the pigment that gives hair its color is found primarily in the
cortex
the layer of hair consisting of unique protein structures that give the hair most of its pigment and strength (elasticity) is called the
cortex
the outer covering of the hair shaft made up of overlapping layers of transparent scales is called the
cuticle
hair that has been pulled out from the roots can grow back under which of the following circumstances?
the papilla has not been destroyed
oil glands are attached to the side of the
root sheath or follicle
the central core of the hair shaft sometimes missing in fine or very fine hair is called the
medulla
which of the following items helps protect the hair and skin from becoming too dry
sebum
what is formed when sebum produced by the oil glands mixes with the bodys perspiration
acid mantle
the muscle that causes the hair to stand on end when a person is scared or cold is known as the
arrector pili
hair is made up primarily of
protein
which of the following is known as the active growing stage of hair
anagen stage
the active growing stage of hair lasts from
2-6 years
catagen, a brief transitional phase, lasts for what amount of time
only a few weeks
the hair growth stage when all cell division stops is the
catagen stage
the resting stage of hair growth when the hair bulb has no attached root sheath is referred to as the
telogen stage
human hair, on the average, grows about
1/2 inch per month (1.25 cm)
the lips, soles of the feet, palms of the hands and eyelids do not have
hair
cilia is the technical term for
eyelash hair
the cross section, or diameter, of the hair shaft is much larger in coarse hair than which of the following
fine hair
what is the hard, resistant layer of protein that protects the hair shaft
cuticle
the large variety of hair color is influenced by the amount, size, type and distribution of
eumelanin and pheomelanin
what is the lack of pigmentation in the hair and skin called
albinism
gray hair is caused by a
reduced color pigment, melanin, in the cortex layer of the hair
the process of turning gray is usually caused by
the natural aging process
the degree of coarseness or fineness of the hair fiber is referred to as
texture
the number of active hair follicles per square inch on the scalp refers to
density
the ability of the hair to absorb moisture, liquids and chemicals is known as
porosity
if the layers of the cuticle are very close together the hair has which type of porosity
resistant
extreme porosity describes hair that has been damaged by the environment or
overprocessed
what refers to the ability of hair to stretch and return to its original shape without breaking
elastiity
wet hair is able to be stretched to what percent of its length
40-50%
small cracks starting in the cuticle and splitting the hair entirely are known as brittle hair, fragilitis crinium or
trichoptilosis
lumps or swelling along the hair shaft is known as trichorrhexis nodosa or
knotted hair
what is a condition in which alternating bands of gray and dark hair exist
ringed hair
an abnormal coverage of hair on areas of the body where normally only lanugo, or baby fine hair, appears is a condition known as
hypertrichosis
Removal methods for hypertrichosis range from tweezing to eletrolysis, depending on all of the following factors except
cosmetologists preference
a condition in which beads or nodes form on the hair shaft is called
monilethrix
a disorder that refers to a chronic scalp condition with excessive flaking, which accumulates on the scalp or falls to the shoulders, is known as dandruff or
pityriasis
a disorder that refers to thick, crusty patches of red irritated scalp is known as
psoriasis
the medical term for greasy or waxy dandruff is
pityriasis steatoides
a red, circular patch off small blisters caused by a vegetable parasite is also known as tinea or
ringworm
an infestation of head lice on the scalp is called
pediculosis capitis
how should a cosmetologist handle a situation when areas of enlarged open follicles surrounded by clusters of red, spots, indicating tinea capitits are observed
refer to dr
what scalp disease might be present if prior to a service several dry, yellow, encrusted areas on the scalp are noticed along with a peculiar odor
tinea favosa
red watery vesicles or pus filled areas caused by an itch mite burrowing under the skin are known as
scabies
which hair color generally has the highest number of hairs per square inch on the head
blonde
hair follicles that are predetermined to produce short, fine, non-pigmented hair that cover most of the body are called
vellus
short, fine, non-pigmented hair is replaced with terminal hair around the time of
puberty
what is the average amount of daily hair loss
40-100 strands
alopecia, or excessive hair loss, may be caused by any one of the following except
parasitic organism
the most common form of hair loss in both men and women is
androgenetic alopecia
in androgenetic alopecia, a combination of heredity, hormones and age causes
shrinking or miniaturization of follicles
which procedural step is generally used to determine if hair loss may be identified as androgenetic alopecia
ask questions about family history
there is a gradual conversion from terminal hair follicles to vellus-like follicles in clients with
androgenetic alopecia
in men, male pattern baldness takes the shape of
horseshoe-shaped fringe
a smaller diameter ponytail on female clients is a sign of
androgenetic alopecia
various hair loss identification systems identify what
pattern and density of the hair loss
the normal temporary hair loss occurring at the conclusion of pregnancy is
postpartum alopecia
sudden hair loss in round or irregular patches without the display of an inflamed scalp is referred to as
alopecia areata
the premature shedding of hair in the resting phase which can be the result of childbirth, shock, drug intake or fever is
telogen effluvium
hair loss caused by excessive pulling or twisting on the hair or by chemical damage is called
traumatic alopecia
brushing the hair prior to a shampoo service does not accomplish
decreasing blood circulation
which of the following types of hair is likely to tangle more easily
chemically treated hair
scalp massage involves manipulations performed on the scalp to relax the muscles and stimulate
blood circulation
avoid giving a scalp massage prior to all of the following services except
shampooing healthy hair
for medical and comfort purposes during a shampoo service, it is often recommended that elderly clients
lean forward into the shampoo bowl
which of the following steps would occur the latest when performing a wet hair service inclusive of draping, shampooing and conditioning
applying shampoo
at what point should the condition of the clients hair and scalp be examined when performing a shampoo
before shampooing the hair
THIS SET IS OFTEN IN FOLDERS WITH...