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Hair & Scalp


alopecia abnormal hair loss
alopecia areata the sudden falling out of hair in round patches or baldness in spots
amino acids units that are joined together end to end by peptide bonds to form the polypeptide chains that comprise proteins
anagen growth phase in the hair cycle in which a new hair shaft is created
androgenic alopecia hair loss characterized by miniaturization of terminal hair which is converted to vellus hair
arrector pili minute, involuntary muscle in the base of the hair follicle that causes goose bumps
canities technical term for gray hair
carbuncle inflammation of the subcutaneous tissue cause by staphylococci
catagen the brief transition period between the growth and resting phases of a hair follicle
COHNS elements carbon, oxygen, hydrogen, nitrogen and sulfur
cortex middle layer of the hair
cowlick tuft of hair that stands straight up
cuticle outermost layer of hair, consisting of a single, overlapping layer of transparent cells
dermal papilla small, cone shaped elevation located at the base of the hair follicle that fits into the hair bulb
disulfide bond strong chemical side bonds that joins the sulfur atoms of 2 neighboring cysteine amino acids to creae cystine, which joins together 2 polypeptide strands like rungs on a ladder
eumelanin melanin that gives brown and black color to hair
follicle tube like depression or pocket in the skin or scalp that contains the hair root
fragilitas crinium technical term for brittle hair
furuncle boil
hair bulb lowest part of a hair strand
hair root part of the hair contained within the follicle
hair shaft portion of the hair that projects beyond the skin
hair stream hair flowing in the same direction resulting from follicles sloping in the same direction
helix spiral shape created by polypeptide chains that intertwine around eachother
hydrogen bond weak physical side bond that is easily broken by water or heat
hypertrichosis condition of abnormal growth of hair
integument largest and fastest growing organ of the body
keratinization process by which newly formed cells in the hair bulb maturei
malassezia naturally occurring fungus that is present on all human skin; and is responsible for dandruff
medulla innermost layer of the hair, composed of round cells, often absent in fine hair
monilethrix technical term for beaded hair
pediculosis capitis infestation of the hair and scalp with head lice
peptide bond chemical bond that joins amino acids to each other, end to end, to form a polypeptide bond
pheomelanin melanin that provides natural hair colors from red and ginger to yellow/blond tones
pityriasis capitis simplex technical term for classic dandruff
pityriasis steatoides scalp inflammation marked by fatty types of dandruff
polypeptide chain long chain of amino acids linked by peptide bonds
postpartum alopecia temporary hair loss experienced at the conclusion of a pregnancy
ringed hair variety of canities characterized by alternating bands of gray and pigmented hair throughout the length of the hair strand
salt bond a weak, temporary side bond between adjacent polypeptide chains
scabies highly contagious disease caused by mites that burrow under the skin
scutula dry, sulfur yellow, cup like crusts on the scalp in tinea favosa or favus
sebaceous glands oil glands of the skin connected to hair follicles
seborrheic dermatitis medical term for pityriasis steatoides accompanied by redness and inflammation
sebum oily secretion of the sebaceous glands which lubricates the hair skin
telagen resting phase, the final phase in the hair cycle that lasts until the fully grown hair is shed
terminal hair long hair found on the scalp as well as on legs, arms, and body of both males and females
tinea medical term for ringworm, a contagious condition caused by fungal infection
tinea capitis fungal infection of the scalp characterization by red papules or spots at the opening of hair follicles
tinea favosa fungal infection characterized by dry, sulfur yellow, cup like crusts on the scalp
trichology science dealing with the study of hair, its diseases and care
trichoptilosis technical term for split ends
trichorrhexis nodosa knotted hair characterized by brittleness and the formation of nodular swellings along the hair shaft
vellus short, fine, unpigmented downy hair that appears on the body with the exception of the plams of the hands and the soles of the feet
wave pattern amount of movement in the hair stand, described as straight, wavy, curly, and extremely curly
whorl hair that forms in a cicular pattern, as on the crown
Created by: samkohlenberg