Trichology Flashcards
Human hair protects both from ____________ and _______________, and also acts as an adornment.
cold, injury
The technical term for the study of hair is ________________.
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 ______________.
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 the hair determined by?
The angle of the follicle
The two primary parts of the hair are the hair ________ and the hair _________________.
fiber, root
What is the portion of hair that extends above the skin’s surface?
hair fiber
The ___________________ resembles the shape of a golf club, and covers the follicle at the lower portion of the hair root.
hair bulb
The __________ is located at the bottom of the follicle and supplies nourishment to the germinal matrix.
papilla
The three major layers of the hair are ______________________.
medulla, cortex, 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 is called the _________________________.
cortex
The _____________ is the outer covering of the hair shaft, made up of overlapping layers of transparent scales.
cuticle
Hair that has been pulled out at the roots can only grow back if the ______________________ has not been damaged or destroyed.
papilla
Oil glands are attached to the side of the _______________________.
hair follicle
The ____________ is the central core of the hair shaft, and is sometimes missing in fine or very fine hair.
medulla
________________ helps protect the hair and skin from becoming too dry.
Sebum
The ____________________ is what is formed when sebum produced by the oil glands mixes with the body’s persperation.
acid mantle
The _____________________ muscle is what causes the hair to stand on end when cold or frightened.
arrector pili
Hair is made up primarily of ______________.
keratinized protein
_________________ is the active growing stage of hair.
Anagen stage
The anagen stage of hair lasts ________________.
2 to 6 years
The _________________ stage, a brief transitional stage, lasts __________________.
catagen, only a few weeks
All cell division stops during 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 average, grows ______________ per month.
1/2”
The lips, soles of the feet, palms of the hands, and eyelids do not have ____________.
hair
The technical term for eyelash hair is ____________.
cilia
The cross-section or diameter of coarse hair is much __________________ than that of fine hair.
larger
The ________________ is a hard, resistant layer of protein that protects the hair shaft.
cuticle
The large variety of hair color is influenced by the amount and proportion of ____________ and _____________.
eumelanin, pheomelanin
_________________ is the lack of pigment in the hair and skin.
Albinism
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 is referred to as ___________________.
density
The ability of hair to absorb liquids and chemicals is referred to as ______________.
porosity
________________ porosity has layers of cuticle which are very tight and close together.
Resistant
Extreme porosity describes hair that has been damaged by the environment or by __________________.
overprocessing
_________________ is the ability of hair to stretch and return to its original shape without breaking.
Elasticity
Wet hair is able to be stretched to ______________ 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 on the hair shaft is known as knotted hair, or ______________________________.
trichorrhexis nodosa
____________________ is a condition in which alternating bands of gray and dark hair exist on each hair fiber.
ringed hair
An abnormal coverage of hair on the body where normally only lanugo appears is a condition known as ________________.
hypertrichosis
A condition in which beads from on the hair shaft is called ________________________.
monilethrix
The technical term for dandruff is ______________.
pityriasis
_________________ is a disorder in which thick, crusty patched of red, irritated scalp are formed.
Psoriasis
The medical term for greasy or waxy dandruff is ______________________.
tinea favosa
A red, circular patch of small blisters caused by a vegetable parasite is known as ______________ or ________________.
ringworm, tinea
An infection of head lice on the scalp is called ____________________.
pediculosis capitis
______________________ is when areas of enlarged open follicles are surrounded by clusters of red spots. This client should be referred to a ______________.
Tinea capitis, physician
What scalp disease might be present if the client has several dry, yellow, encrusted areas on the scalp, accompanied by a strong 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
Lon, thick pigmented hair such as scalp and eyebrow hair is referred to as ________________.
terminal hair
Hair follicles that are predetermined to produce short, fine, non-pigmented hair that covers most of the body are called ____________.
vellus
Short, fine, non-pigmented hair is replaced with terminal hair during and around the time of _____________.
puberty
The average amount of daily hair loss is ______________.
40 - 100 strands
Alopecia, or excessive hair loss, may be caused by ________________________________.
fungal infection, bacterial infection, or inflammatory disease of the scalp
The most common cause 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 the hair follicles
Which procedural step is generally used to determine if hair loss may be identified as androgenic alopecia?
Ask questions about family history of hair loss
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 can be a sign of ____________________________.
androgenetic alopecia
The normal temporary hair loss occurring at the end 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 accomplishes which three functions?
detangles, removes dust and dirt, stimulates blood circulation
______________________ is likely to tangle more easily.
Chemically treated hair
_____________ involves manipulations performed to relax the muscles and stimulate blood circulation of the scalp.
Scalp massage
When relaxing, coloring, or perming, avoid a scalp massage prior to service. (True or False)
True
