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CH 11
Properties of the Hair & Scalp
| Question | Answer |
|---|---|
| As newly formed cells mature, they fill up with a fibrous ______. This process is called keratinization. | protein |
| Substance that gives the cortex its natural color | melanin |
| Three main layers of the hair shaft | cuticle, cortex, and medulla |
| A person must obtain ____ of the essential amino acids from their daily diet | 9 |
| Involuntary muscle attached to underside of hair follicle | arrector pili |
| small cone-shaped elevation located at the bottom of the hair follicle | dermal papilla |
| lowest part of the hair strand | hair bulb |
| structure in the skin or scalp that encases a hair root | hair follicle |
| mature strand of hair is divided into two parts knows as | hair root and hair shaft |
| study of hair is known as | trichology |
| hair that forms in a circular pattern | whorl |
| strength of the side bonds that hold the hair's individual fibers in place is indicated by | elasticity |
| hair with low porosity | resistant |
| number of individual hair strands on one square inch of the scalp indicates | density |
| hair texture refers to | thickness or diameter |
| What term refers to an infection of the hair follicles frequently caused by staphyloccocus or other bacteria | folliculitis |
| normal hair contains _____ percent of the element carbon | 51% |
| Normal hair contains ______ percent of the element oxygen | 21% |
| Lowest percents on the COHNS elements? | Sulfur |
| Chemical bond that joins amino acids to each other | peptide bond |
| in the cortex a side bond that is easily broken by strong alkaline or acidic solutions | salt |
| cortex contains color matter in the form of minute grains of ____ or pigment | melanin |
| pheomelanin provides natural hair colors | yellow and blond & red and ginger |
| shape of a hair strand described as wavy, curly, straight | wave pattern |
| short, fine, downy, unpigmented hair | vellus hair |
| what place on the body would normally include vellus hair | eyelids |
| long, coarse, pigmented hair found on scalp, legs, arms and body | terminal hair |
| three cycles of hair | anagen, catagen, telogen |
| technical term for a boil | furnacle |
| contagious condition caused by head lice | pediculosis capitis |
| If a client has ___________ service should be limited to referring them to a physician for medical treatment | scabies |
| scalp condition with red papules or spots at the opening of hair follicles | tinea capitis |
| Monilethrix is technical term for | beaded hair |
| dry, brittle condition with nodular swellings along the hair shaft | trichorrhexis nodosa |
| split ends | trichoptilosis |
| hair that has absence of melanin | gray hair |
| technical term form gray hair | canities |
| scientifically proven to increase hair growth by the FDA | Minoxidil |
| loss of hair in round or irregular patches without inflammation | alopecia areata |
Created by:
Lfranklin