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trichology

Terms in this set (68)

follicle
hair grows from a tube like pocket called a root sheath or a
the inside diameter of the hair follicle
the diameter of a hair fiber will be the same as
the angle of the follicle
what determines the natural flow or wave pattern of the hair
hair root
the two primary parts of the hair are the hair fiber and the
hair fiber
what is the portion of the hair that extends above the skins surface?
papilla
filled with capillaries and supplying nourishment to the general to the germinal matrix cells is the
cuticle
the three major layers of the hair are the medulla, cortex and which of the following?
cuticle
the outer covering of the hair shaft made up of overlapping layers of transparent scales is called the
cortex
the pigment that gives hair its color is found primarily in the
cortex
the layer of hair consisting of unique protein structures that gives hair most of its pigment and elasticity is called the
medulla
the central core of the hair shaft is known as the
if the papilla has not been destroyed
hair that has been pulled out from the roots can grow back under which of the following circumstances?
sebum
which of the following helps protect the hair and skin from becoming too dry?
acid mantle
what is formed when sebum produced by the oil glands mixes with the bodys perspiration?
arrector pili
the muscle that caused the hair to stand on end when a person is scared or cold is known as the
protein
hair is made up primarily of
anagen stage
which of the following is known as the active stage of hair?
2 to 6 years
the active growing stage of hair lasts from
catagen stage
the hair growth stage when all cell division stops is the
only a few weeks
catagen, a brief transitional phase, lasts for what amount of time?
telogen stage
the resting stage of hair growth when the hair bulb has no attached root sheath is referred to as the
1/2 inch (1.25 cm) per month
human hair, on the average, grows about
hair
the lips, soles of the feet, palms of the hands and eyelids do not have
eyelash hair
cilia is the technical term for
fine hair
the cross section or diameter, of the hair shaft is much larger in coarse hair than in which of the following?
cuticle
which of the following is the hard, resistant layer of protein that protects the hair shaft?
eumelanin and pheomelanin
the large variety of hair color is influenced by the amount and distribution of
albinism
what is the lack of pigmentation in the hair and skin called?
reduced color pigment in the cortex layer of the hair
gray hair is caused by a
the natural aging process
the process of hair turning gray is usually caused by
texture
the degree of coarseness or fineness of the hair fiber is referred to as
density
the number of active hair follicles per square inch on the scalp refers to
porosity
the amount of moisture (or liquids and chemicals) able to be absorbed by hair is its
resistant
if the layers of the cuticle are very close together, the hair most likely has which type of porosity?
overprocessed
extreme porosity describes hair that has been damaged by the environment or has been
elasticity
which of the following refers to the ability of hair to stretch and return to its original shape
40% to 50%
wet hair is able to be stretched to what percent of its length
trichoptilosis
small cracks starting in the cuticle and splitting the hair entirely are known as brittle hair, fragilitis crinium or
knotted hair
lumps or swelling along the hair shaft is known as trichorrhexis nodosa or
ringed hair
which of the following is a condition in which alternating bands of gray and dark hair exist?
hypertrichosis
a cosmetologist may have to remove excess hair from areas where there is abnormal coverage, a condition known as
cosmetologists preference
removal methods for hypertrichosis range from tweezing to electrolysis, depending on all of the following factors EXCEPT
monilethrix
a condition in which beads or nodes form on the hair shaft is called
pityriasis
a chronic scalp condition with excessive flaking that accumulates on the scalp or falls to the shoulders is known as dandruff or
pityriasis capitis simplex
dry flakes attached to the scalp or on the hair, which can appear translucent, are called
pityriasis steatoides
the medical term for greasy or waxy dandruff is
blonde
which hair color generally has the highest number of hairs per square inch on the head?
terminal hair
long, thick pigmented hair such as scalp and eyebrow hair is referred to as
vellus
short, fine, non pigmented hair that cover most of the body is called
lanugo
the baby fine, silky hair that is shed shortly after birth and replaced by vellus is known as
40 to 100 strands
what is the average amount of daily hair loss?
parasitic organism
alopecia, or excessive hair loss, may be caused by any one of the following EXCEPT
androgenetic alopecia
the most common form of hair loss in both men and woman is
shrinking or miniaturizing of follicles
in androgenetic alopecia, a combination of heredity, hormones and age causes
ask questions about family history
which procedural step is generally used to determine if hair loss may be identified as androgenetic alopecia?
androgenetic alopecia
there is gradual conversion from terminal hair follicles to vellus like follicles in clients with
horseshoe shaped fringe
in men with androgenetic alopecia, male pattern baldness frequently takes the shape of
androgenetic alopecia
a smaller diameter ponytail on female clients is a sign of
postpartum alopecia
the normal temporary hair loss occurring at the conclusion of pregnancy is
alopecia areata
sudden hair loss in round or irregular patches without the display of an inflamed scalp is
telogen effluvium
the premature shedding of hair in the resting phase, which can be the result of childbirth, shock, drug intake or fever, is
traumatic alopecia
hair loss caused by excessive pulling or twisting on the hair or by chemical damage is called
decreasing blood circulation
brushing the hair prior to a shampoo service accomplishes all of the following EXCEPT
chemically treated hair
which of the following types of hair is likely to tangle more easily?
blood circulation
scalp massage involves manipulations performed on the scalp to relax the muscles and stimulate
effleurage
what massage movement involves light or heavy kneading and rolling of the muscles?
lean forward into the shampoo bowl
for medical and comfort purposes during a shampoo service, it is often recommended that elderly clients
applying shampoo
which of the following steps would occur last when performing a wet hair service inclusive of draping, shampooing and conditioning?
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