Trichology Flashcards
The technical term for the study of hair is called…
Trichology
What are the main purposes of hair?
Adornment and protection from heat, cold and injury
Hair grows from a tube-like “pocket” called a tooth 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 or wave pattern of hair determined by?
The angle of the follicle
The two primary parts of hair are the hair fiber and the…
Hair root
The papilla supplies nourishment to the…
Germinal matrix
What term identifies the outer covering of the hair shaft made up of overlapping layers of transparent scales?
Cuticle
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 second layer of hair)
The central core of the hair shaft sometimes missing in fine or very fine hair is the…
Medulla
What helps protect the hair and skin from becoming too dry?
Sebum
What is formed when sebum produced by the oil glands mixes with the body’s 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 that has been pulled out from the roots can grow back under which circumstance?
The papilla has not been destroyed
What is known as the active growing stage of hair?
Anagen stage
The active growing stage of hair lasts from…
2 to 6 years
Catagen, a brief transitional stage of hair growth, 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 (1.25 cm) per month
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…
Fine hair
The hard, resistant layer of protein that protects the hair shaft is the…
Cuticle
Hair color is influenced by the amount, size and distribution of…
Eumelanin and pheomelanin
Gray hair is caused by…
Reduced color pigment in the cortex layer of the hair
The process of hair turning gray is most commonly 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 of the scalp refers to…
Density
The ability of the hair to absorb moisture, liquids or 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?
Elasticity
Wet hair is able to be stretched to what percent of its length?
40% to 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
A condition in which beads or nodes form on the hair shaft is called…
Monilethrix
What condition results in a situation 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
A disorder that refers to thick, crusty patches of red irritated scalp is known as…
Psoriasis
A disorder that refers to a chronic scalp condition with excessive flaking, which accumulates on the scalp or falls to the shoulders, is called dandruff or…
Pityriasis
The medical term for greasy or why dandruff is…
Pityriasis capitis
As red, circular patch of small blisters on the skin or scalp caused by a vegetable parasite is known as tinea or…
Ringworm
How should a cosmetologist handle a situation where areas of enlarged open follicles surrounded by clusters of red spots, indicating tinea capitis are observed?
Refer the client to a physician
Red, watery vesicles or pus-filled areas caused by an itch mite burrowing under the skin are known as…
Scabies
An infestation of head lice on the scalp is called…
Pediculosis capitis
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 to 100 strands
Which hair color generally has the highest number of hairs per square inch on the head?
Blond
The most common form of hair loss in both men and women is…
Androgenetic alopecia
Male pattern baldness takes the shape of…
Horseshoe-shaped fringe
In the diameter of a female client’s ponytail has become smaller over time, it could indicate…
Androgenetic alopecia
Sudden hair loss in round or irregular patches without the display of an inflamed scalp is referred to as…
Alopecia areata
What is the hair loss cause by excessive pulling or twisting on the hair or by chemical damage?
Traction
What does brushing the hair prior to a shampoo service do?
Removes dust and dirt, tangles and stimulates blood circulation
For medical and comfort purposes during a shampoo service, is it often recommended that elderly clients…
Lean forward into the shampoo bowl
Scalp massage involves movements performed on the scalp to relax the muscles and increase…
Blood circulation
What type of hair is likely to tangle more easily?
Chemically treated hair
What step would occur last when performing a wet hair service inclusive of draping, shampooing and conditioning?
Applying sham
