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Cosmetology ch 11
| Question | Answer |
|---|---|
| A small cone-shaped area located at the base of the hair follicle that fits into the hair bulb is the: | dermal papilla |
| The substance secreted by the sebaceous glands is called: | sebum |
| The scientific study of hair, its disease, and its care is known as: | trichology |
| The part of the human hair that projects above the skin is known as the: | hair shaft |
| The pocket or tubelike depression in the scalp or skin that contains the hair root is the: | follicle |
| The thickened, clublike structure that forms the lower part of the hair root is the: | hair bulb |
| The tiny, involuntary muscle fiber in the skin inserted in the base of the hair follicle is the: | arrector pili |
| The three main layers of the hair shaft are the cuticle, cortex, and: | medulla |
| The layer that consists of transparent, scalelike cells that look like shingles on a roof is the: | cuticle layer |
| The fibrous protein core formed by elongated cells that contains melanin pigment is the: | cortex layer |
| A lengthwise section of hair shows that cuticle scales overlap and each individual cuticle scale is attached to the: | cortex |
| The cortex is responsible for the natural color of hair, 90 percent of the total weight, and hair: | elasticity |
| Hair is composed of protein that grows from cells originating within the: | hair follicle |
| The hair shaft that emerges from the scalp is a nonliving fiber composed of: | keratinized protein |
| The units of structure that build protein and are linked end-to-end like a string of pearls are: | amino acids |
| Chemical bonds that hold together amino acids molecules are: | peptide bonds |
| When peptide bonds hold together very long chains of amino acids, it is called a: | polypeptide chain |
| The three different types of cross-links that form bonds between the polypeptide chains in the cortex are: | hydrogen, salt, and disulfide bonds |
| The five major elements found in skin, hair, and nails are often referred to as the: | COHNS |
| A weak, temporary side bond that is easily broken by water and heat is a: | hydrogen bond |
| A temporary side bond between adjacent polypeptide chains that is broken by changes in pH is a: | salt bond |
| Permanent waving and hair relaxers change the shape of hair by chemically altering the hair's: | disulfide bonds |
| All natural hair color is the result of pigment located in the cortex called: | melanin |
| The term that is used to describe the shape of the hair strand is the: | wave pattern |
| The thickness or diameter of the individual hair strand is referred to as hair: | texture |
| Hair that has the largest diameter and usually requires more processing time is: | coarse hair |
| The ability of the hair to absorb water or oil is: | porosity |
| Chemical services performed on hair with low porosity require a solution that is: | more alkaline |
| The ability of hair to stretch and return to its original length without breaking is referred to as hair: | elasticity |
| Hair flowing in the same direction, the result of follicles sloping in the same direction form a: | hair stream |
| Dry hair and scalp should be treated with products that contain moisturizers and: | emollients |
| Oily hair and scalp are caused by imporper washing or overactive: | sebaceous glands |
| The short, fine, and downy hair that helps in the efficient evaporation of perspiration is: | vellus hair |
| The three growth cycles of human hair are: | anagen, catagen, and telogen |
| The average growth of healthy scalp hair is about: | 1/2 inch per month |
| The resting phase or final phase of the hair cycle that lasts until the fully grown hair is shed is the: | telogen |
| The sudden falling out of hair in patches or baldness in spots is: | alopecia areata |
| The technical term for gray hair is: | canities |
| The condition of abnormal hair growth of terminal hair is referred to as: | hypertrichosis |
| A condition that is characterized by brittleness and the formation of nodular swellings along the hair shaft is: | trichorrhexis nodosa |
| The medical term that is used to describe dandruff is: | pityriasis |
| Current research confirms that dandruff is the result of a fungus called: | malassezia |
| A severe type of dandruff characterized by an accumulation of greasy or waxy scalp scales mixed with sebum is: | pityriasis steatoides |
| Tinea is characterized by itching scales and sometimes painful circular lesions and is caused by: | fungal organisms |
| An infestation of the hair and scalp with head lice is: | pediculosis capitis |
| An acute, localized bacterial infection of the hair follicle that produces constant pain is a: | furuncle (boil) |
| A carbuncle is an inflammation of the subcutaneous tissue caused by: | staphylococci |
| A client with seborrheic dermatitis should be referred to: | a physician |
| The type of fungal infection that is characterized by red papules or spots at the opening of the hair follicle is: | tinea capitis |
| A highly contagious skin disease caused by a parasite called a mite is: | scabies |
Created by:
Khayesblue