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 |