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Chapter 9 Milady
Properties Of The Hair & Scalp
| Question | Answer |
|---|---|
| Abnormal hair loss | Alopecia |
| The sudden falling out of hair in round patches or baldness in spots, may occur on the scalp and else where on the body | Alopecia Areata |
| Units that are joined together end to end by peptide bonds to form the polypeptide chains that comprimise proteins | Amino Acids |
| Growth phase in the hair cycle in which a new hair shaft is created | Anagen |
| Hair loss characterixed by minaturization of terminal hair which is converted to vellus hair; in men, it is known as male pattern baldness | Androgenic Alopecia |
| Minute, involuntary muscle in the base of the hair follicle that causes "goose bumps" | Arrector Pili |
| Technical term for gray hair; results from the loss of the hair's natural melanin pigment | Canities |
| Inflammation of the subuctaneous tissue caused by staphylococci; similar to furuncle but larger | Carbuncle |
| The breif transition period between the growth and resting phases of a hair follicle | Catagen |
| The five elements that make up human hair, skin, tissue and nails | COHNS Elements |
| Middle layer of the hair | Cortex |
| Tuft of hair that stands straight up | cowlick |
| Cuticle Outermost layer of the hair, consisting of a single, overlapping layer of transparent, scale like cells | Cuticle |
| small cone-shaped elevation located at the base of the hair follicle that fits into the hair bulb | Dermal Papilla |
| BondStrong chemical side bonds that join the sulfur atoms of two neighboring cysteine amino acids to create cystine, which joins together two polypeptide strands like rungs on a ladder | Disulfide Bond |
| Melanin that gives brown and black color to hair | Eumelanin |
| tube like depression or pocket in the skin or scalp that contains the hair root | Follicle |
| Technical term for brittle hair | fragilitas crinium |
| boil; acute, localized bacterial infection of the hair follicle | furuncle |
| lowest part of a hair strand; the thickened club shaped structure that forms the lower part of the hair root | hair bulb |
| the number of individual hair strands found on 1 square inch of the scalp | hair density |
| ability of the the hair to stretch and return to its original length without breaking | hair elasticity |
| ability of the hair to absorb moisture | hair porosity |
| the part of the hair contained within the follicle, below the surface of the scalp | hair root |
| the portion of hair that projects beyond the skin | hair shaft |
| hair flowing in the same direction, resulting from follicles sloping in the same direction | hair stream |
| thickness or diameter of the individual hair strands | hair texture |
| weak physical side bond that is easilly broken by water or heat | hydrogen bond |
| condition of abnormal growth of hair, charecterized by the growth of terminal hair in areas of the body that normally grow only vellus hair | hypertrichosis (Hirsuties) |
| largest and fastes growing organ of the body, composed of the hair, skin and nails | integument |
| process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus and die | keratinization |
| naturally occuring fungus that is present on all human skin, and is responsible for dandruff | malassezia |
| innermost layer of the hair, composed of round cells | medulla |
| tiny grains of pigment in the cortex that give natural color to the hair | melanin |
| technical term for beaded hair | monilethrix |
| infestation of the hair and scalp with head lice | pediculosis capitis |
| chemical bond that joins amino acids to each other, end to end, to form a polypeptide chain | peptide bond or end bond |
| melanin that provides natural hair colors from red and ginger to yellow/blond tones | pheomelanin |
| dandruff and inflammation of the skin chracterized by the inflammation and flaking of fine, thin scales | pityriasis |
| technical term for classic dandruff charecterized by scalp irritation, large flakes, and itchy scalp | pityriasis capitis simplex |
| scalp inflammation marked by fatty (greasy or waxy) types of dandruff | pitryasis steatoides |
| long chain of amino acids linked by peptide bonds | polypeptide chain |
| temporary hair loss experianced at the conclusion of a pregnancy | postpartum alopecia |
| variety of canities charecterized by alternating bands gray and pigmented hair throughout the length of the hair strand | ringed hair |
| a weak, temporary side bond between adjacent polypeptide chains | salt bond |
| highly contagious disease caused by mites that burrow under the skin | scabies |
| dry sulfur yellow cup like crusts on the scalp in tinea favosa or favus | scutula |
| oil glands of the skin connected to hair follicles | sebaceous glands |
| medical term for pityriasis steatoides accompanied by redness and infalmmation | seborrheic dermattis |
| oily secretion of the sebaceous glands, which lubricates the hair and skin | sebum |
| resting phase the final phase in the hair cycle that lasts untill the fully grown hair is shed | telogen |
| long hair found on the scalp, as well as on legs,arms,body of both males and females | terminal hair |
| medical term for ringworm a contagoius condition caused bu fungal infection | tinea |
| fungal infection of the scalp charecterized by red papules, or spots at the opening of hair follicles | tinea capitis |
| fungal infection charecterized by dry sulfur cup like crusts on the scalp called scutual | tinea favosa (tinea favus) |
| science dealing with the study of hair its diseases and care | trichology |
| technical term for split ends | trichoptilosis |
| knotted hair chracterized by brittleness and the formation of nodualr swellings along the hair shaft | trichorrhexis nodosa |
| short fine unpigmented downy hair that appears on the body with the exception of the palms of the hands and the soles of the feet | vellus or lanugo |
| amount fo movement in the hair strand described as straight wavy curly and extremly curly | wave pattern |
| hair that forms in a circular pattern as on the crown | whorl |
| Spiral shape created by polypeptide chains that intertwine around eachother | Helix |
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lois100754
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