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90 Cards in this Set
- Front
- Back
The scientific study of the hair, its diseases, and its care. |
Trichology
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The 2 main divisions of the hair are the hair root and the ___ ____.
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Hair Shaft |
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The three main structures associated with the hair root.
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Follicle, Bulb, and Dermal papilla
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The hair root is contained in a tube-like depression or pocket in the skin called the ____.
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Follicle
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The club-shaped structure that forms the lower part of the hair root.
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Hair Bulb
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The blood and nerve supply that provides nutrients needed for hair growth are contained in the ___ ___.
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Dermal Papilla
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The tiny involuntary muscle in the skin that contracts and causes "goose bumps"
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Arrector Pili
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The oily substance called sebum is secreted by the ___ ___.
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Sebaceous Glands
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The 3 layers of the hair shaft.
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Cuticle, Cortex, and Medulla
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The layer of the hair shaft that protects it from penetration and damage.
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Cuticle
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Genrally only thick coarse hair contains a _____.
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Medulla
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About 90% of the total weightof hair comes from the ___.
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Cortex
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Liquids can penetrate the hair only when the ___ are raised.
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Cuticle
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In order to penetrate the cuticle layer and reach the cortex, oxidation haircolors, perm solutions, and chemical relaxers must have What?
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An Alkaline pH
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The changes that take place in the hair during permanent waving, chemical relaxing, and oxidation hair coloring occur in the ____.
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Cortex
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As living cells of the hair mature, they fill up with a protein called ___.
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Keratin
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The elements that make up the amino acids in the hair are carbon, nitrogen, hydrogen, ____ and ____.
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Oxygen and Sulfur
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Of the 5 elements found in the hair, the element that makes up the highest percentage is ____.
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Carbon
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The chemical bonds that join amino acids to each other are called ___ ____.
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Peptide Bonds
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The bonds that account for the strength and elasticity of hair are the ___ ___.
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Side Bonds
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There are 3 different types of side bonds in the cortex; name the 3.
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Hydrogen, salt, and disulfide bonds
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The strongest side bonds in the cortex are the ___ ___.
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Disulfide Bonds
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A Disulfide bond joins the ____ atoms of 2 neighboring cysteine amino acids to create cystine.
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Sulfur
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Disulfide bonds can be broken by ___ and ____.
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Perms and Relaxers
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A hydrogen bond is a physical bond that is easily broken by ____ or ___.
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Water or heat
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All natural color is based on the ratio of ____ to ____.
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Eumelanin to Pheomelanin
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The pigment that provides natural hair colors from red and ginger to yellow/blonde is _____.
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Pheomelanin
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All natural hair color is the result of the pigment located within the ____.
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Cortex
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The amount of movement in the hair strand is referred to as its ____ ____.
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Wave Pattern
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A cross-section of a wavy hair strand is usually ____.
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Oval
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Extremely curly hair that forms coils usually has what?
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A fine texture
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The 4 most important factors to consider in a hair analysis includes ____, ____, and ____.
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Elasticity, Porosity, and Texture
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Hair texture is defined as the hair's ____.
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Diameter
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The hair's ability to absorb moisture is its _____.
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Porosity
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____ hair has the largest diameter.
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Coarse
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The hair texture that is the most susceptible to damage from chemical services is ___.
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Fine
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The number of individual hair strands on 1 square inch of scalp is referred to as ____.
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Density
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The number of hairs on the head generally varies with the _____ .
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Color of the Hair
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The thickest hair (highest density) is generally found among people with ___ hair.
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Blonde
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Hair with low porosity is considered ____.
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Resistant
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Hair with high Porosity is generally the result of what?
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overprocessing
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Wet hair with normal elasticity will stretch up to ___ of its original length and return to that same length without breaking. |
50%
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Hair flowing in the same direction is called a ____ ____.
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Hair Stream
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Dry hair and scalp are caused by what?
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Inactive Sebaceous Glands
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Found on infants, Lacking medulla, and not pigmented are characteristics of ___ hair.
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Vellus
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Hormonal changes during puberty cause some areas of vellus hair to be replaced with _____ hair.
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Terminal
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The 3 phases of hair growth are anagen, catagen, and ____.
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Telogen
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The growth phase of the hair growth cycle is known as ____.
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Anagen
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The follicle canal shrinks and detaches from the dermal papilla during this phase.
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Catagen Phase
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About ____% of the scalp hair growing in the anagen phase at any one time.
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90%
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The phase of hair growth that lasts the shortest length of time is the _____ phase.
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Catagen
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The resting phase of the hair growth cycle is known as the ____ phase.
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Telogen
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About ___ % of the hair is in the resting phase at any one time.
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10%
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Myth or Not? - Scalp massages increase hair growth
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Myth
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Gray hair is exactly like pigmented hair except it lacks ____.
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Melanin
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A loss of 35 to 40 hairs a day is considered ____.
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Normal
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Abnormal hair loss is called ____. |
Alopecia
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A client's hair must be ____ before any servicing.
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Analyzed
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By the age of 35, almost ___% of men and women show some hair loss.
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40%
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In men, a horseshoe-shaped fringe of hair is referred to as what?
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Male Pattern Baldness
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A miniaturization of terminal hair contributes to what?
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Postpartum Alopecia
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A type of Alopecia characterized by the sudden falling out of hair in round patches or baldness in spots is called ____ ____.
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Alopecia Areata
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In women, androgenic alopecia shows up as what?
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General thinning of the Crown Hair
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Hair loss at the end of pregnancy is called ____ ____.
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Postpartum Alopecia
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A topical medication applied to the scalp that has been proven to stimulate hair growth is ____.
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Minoxidil
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Of the 2 products proven to stimulate hair growth, the oral prescription drug is ____.
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Finasteride
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Finasteride is not prescribed for women because if the high risk for ___ ____.
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Birth Defects
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Among the treatments for hair loss, hair plugs are a ____ treatment.
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Surgical
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Hair plugs may be transplanted by a ____.
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Surgeon
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The techincal term for gray hair is ___.
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Canities
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The type of Canities that exists at or before birth is called ____ ____.
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Congenital Canities
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The type of Canities that results from age or genetics is called ____ _____. |
Acquired Canities
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Ringed hair is a variety of ____.
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Canities
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The technical term for beaded hair is ____.
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Monilethrix
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The technical term for split ends is ____.
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Trichoptilosis
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Abnormal growth of hair is called ____.
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Hypertrichosis
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A condition characterized by brittleness and nodular swellings along the hair shaft is _____ _____.
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Trichorrhexis Nodosa
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Wax hair removal, tweezing, shaving, and electrolysis are among the treatment for _____.
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Hypertrichosis
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The condition in which the hairs may split at any part of their length is called ____ ____.
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Fragilitas Crinium
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Dry dandruff, thin scales, and an itchy scalp are typical of ___ ___ ___.
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Pityriasis Capitis Simplex
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Pityrasis steatoides is a scalp inflammation marked by greasy or waxy ____.
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Dandruff
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Clients with tinea capitis should be what?
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Referred to a physician
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Tinea, or ringworm, is caused by what?
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Vegetable Parasites
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Ringworm of the scalp is also known by the technical term ___ ____.
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Tinea Capitis
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Dry, Sulfur-yellow, cuplike crusts on the scalp, called scutula, are characteristic of ___ ____.
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Tinea Favosa
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The contagious skin disease caused by the itch mite burrowing under the skin is known as ____.
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Scabies
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Pediculosis Capitis is the infestation of the hair and scalp with ___ ____.
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Head Lice
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A boil is also known as a ___.
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Furuncle
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An inflammation of the subcutaneous tissue caused by staphylococci is called ____.
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Carbuncle
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Preventing the spread of Tinea, Pityriasis, and Staphylococci infections involves proper what?
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Sanitation and Disinfection
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