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Chapter 9 Milady

Properties Of The Hair & Scalp

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
Created by: lois100754