Term
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Definition
| The scientific study of hair |
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Term
| What are the main purposes of hair? |
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Definition
Adornment
Protection from cold, heat, and injury |
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Term
| When looking through a microscope,which portion of hair would display living cells? |
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Definition
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Term
| Hair grows from a tube-like 'pocket' called...? |
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Definition
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Term
| What determines the natural flow of hair? |
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Definition
| The angle of the follicle |
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Term
| What resembles the shape of a golf club and covers the follicle at the lower end of the hair root? |
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Definition
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Term
| Pigment that gives hair it's color is found in the...? |
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Definition
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Term
| What are the two primary parts of the hair? |
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Definition
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Term
| What is located at the bottom of the follicle and provides nourishment to the germinal matrix? |
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Definition
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Term
| What are the three major layers of the hair? |
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Definition
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Term
| Outer covering of the hair shaft made of overlapping layers? |
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Definition
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Term
| Layer of hair made of unique, hard and resistant protein structures that give the hair most of its pigment and elasticity? |
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Definition
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Term
| Hair that has been pulled out can grow back as long as... |
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Definition
| The papilla has not been destroyed |
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Term
| The central core of the hair shaft sometimes missing in fine hair is the... |
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Definition
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Term
| What protects the hair and skin from becoming too dry? |
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Definition
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Term
| What is formed by a mix of sebum and perspiration? |
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Definition
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Term
| The muscle that causes hair to stand on end when cold or scared is...? |
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Definition
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Term
| What is the active growth stage of hair? |
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Definition
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Term
| The Anagen stage lasts... |
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Definition
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Term
| What is the resting stage, when hair bulb has no attached root sheath? |
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Definition
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Term
| The Catagen stage lasts... |
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Definition
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Term
| The Telogen stage lasts... |
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Definition
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Term
| What stage is a brief transitional stage where no cell division takes place? |
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Definition
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Term
| The technical term for eyelash hair? |
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Definition
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Term
| On average, human hair grows at a rate of... |
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Definition
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Term
| Hair color is influence by the amount and distribution of what? |
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Definition
| Eumelanin and Pheomelanin |
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Term
| What is the lack of pigmentation in the hair and skin? |
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Definition
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Term
| Grey hair is caused by...? |
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Definition
| Lack of pigment in the cortex |
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Term
| Degree of coarseness or fineness of the hair fiber is called... |
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Definition
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Term
| The number of hair follicles per square inch refers to... |
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Definition
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Term
| What is the amount of moisture, liquid and chemicals able to be absorbed by the hair called? |
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Definition
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Term
| If the layers of the cuticle are very close together, the hair has what type of porosity? |
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Definition
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Term
| If the hair has been damaged it has what type of porosity? |
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Definition
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Term
| What is the ability of the hair to stretch and return to its original shape without breaking? |
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Definition
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Term
| Wet hair is able to be stretched how much of it's length? |
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Definition
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Term
| Dry hair can stretch how much of it's length? |
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Definition
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Term
| Small cracks starting in the cuticle and splitting the hair entirely are known as fagilitis crinium or... |
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Definition
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Term
| Lumps or swelling along the hair shaft is known as trichorrhexis nodosa or... |
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Definition
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Term
| Beads or nodes forming along the hair shaft is called... |
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Definition
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Term
| Condition in which alternating bands of gray and dark? |
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Definition
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Term
| Abnormal coverage of hair on areas of the body where normally only lanugo appears is what? |
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Definition
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Term
| What is the chronic scalp condition with excessive flaking, which accumulated on the scalp or falls to shoulders? |
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Definition
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Term
| Dry flakes attached to scalp or on hair, that appear translucent? |
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Definition
| Pityriasis capitis simplex |
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Term
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Definition
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Term
| What disorder causes thick, crusty patches of red irritated scalp (or skin)? |
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Definition
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Term
| Red, circular patch of small blisters caused by a vegetable parasite? |
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Definition
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Term
| What is an infestation of lice on the scalp called? |
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Definition
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Term
| What disease is characterized by dry, yellow encrusted area that have a peculiar odor? |
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Definition
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Term
| Red, watery vesicles or pus-filled areas caused by an itch mite burrowing under the skin? |
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Definition
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Term
| Which hair color generally has the highest number of hairs on the head? |
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Definition
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Term
| How much hair is lost daily, on average? |
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Definition
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Term
| Alopecia can be caused by? |
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Definition
| Bacterial or fungal infection, or inflammation of the scalp |
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Term
| What causes androgenetic alopecia? |
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Definition
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Term
| How does androgenetic alopecia work? |
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Definition
| Follicles shrink or miniaturize and convert to vellus-like follicles |
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Term
| What type of alopecia occurs in round or irregular patches without the display of an inflamed scalp? |
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Definition
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Term
| Hair loss caused by excessive pulling or twisting on the hair or by chemical damage? |
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Definition
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Term
| What type of alopecia occurs temporarily after pregnancy? |
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Definition
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Term
| What is the premature shedding of hair after childbirth, shock, drug intake or fever? |
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Definition
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Term
| When should you avoid giving a scalp massage? |
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Definition
| Before a relaxer, color or perm (Any chemical service) |
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