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MILADY 2012 CHAPTER 11
PROPERTIES OF THE HAIR AND SCALP
Terms in this set (60)
abnormal hair loss.
autoimmune disorder that causes the affected hair follicles to be mistakenly attacked by a person's own immune system; usually begins with one or more small, round, smoothe bald patches on the scalp.
total loss of scalp hair.
complete loss of body hair.
units that are joined together end to end like pop beads by strong, chemical peptide bonds to form the polypeptide chains that comprise proteins.
(growth phase) phase during which new hair is produced.
(androgenetic alopecia) hair loss characterized by miniaturization of terminal hair that is converted to vellus hair; in men, it is known as male pattern baldness
technical term for gray hair; results from the loss of the hair's natural melanin pigment.
inflammation of the subcutaneous tissue caused by staphylococci; similar to a furuncle but larger.
the brief transition period between the growth and resting phases of a hair follicle. It signals the end of the growth phase.
the five elements- carbon, oxygen, hydrogen, nitrogen and sulfur- that make up human hair, skin, tissue, and nails.
middle layer of the hair; a fibrous protein core formed by elongated cells containing melanin pigment.
tuff of hair that stands straight up.
an amino acid joined with another cysteine amino acid to create cystine amino acid.
an amino acid that joins together two peptide strands.
strong chemical side bond that joins the sulfur atoms of two neighboring cysteine amino acids to create one cystine, which joins together two polypeptide strands like rungs on a ladder.
technical term for brittle hair.
boil; acute, localized bacterial infection of the hair follicle that produces constant pain.
lowest part of a hair strand; the thickened, club-shaped structure that forms the lower part of the hair root.
outermost layer of hair; consisting of a single, overlapping layer of transparent, scale-like cells that look like shingles on a roof.
the number of individual hair strands on 1 square inch (2.5 square centimeters) of scalp
ability of the hair to stretch and return to its original length without breaking.
the tube-like depression or pocket in the skin or scalp that contains the hair root.
ability of the hair to absorb moisture.
the part of the hair located below the surface of the epidermis.
the portion of hair that projects above the epidermis.
hair flowing in the same direction, resulting from follicles sloping in the same direction.
thickness or diameter of the individual hair strand.
spiral shape of a coiled protein created by polypeptide chains that intertwine with each other.
a weak, physical, cross-link side bond that is easily broken by water or heat.
easily absorbs moisture; in chemistry terms, capable of combining with or attracting water (water-loving).
naturally resistant to being penetrated by moisture.
(hirsuties) condition of abnormal growth of hair, characterized by the growth of terminal hair in areas of the body that normally grow only vellus hair.
process by which newly formed cells in the hair bulb mature, fill with keratin, move upward, lose their nucleus, and die.
the bonds created when disulfide bonds are broken by hydroxide chemical hair relaxers after the relaxer is rinsed from the hair.
naturally occurring fungus that is present on all human skin, but is responsible for dandruff when it grows out of control.
innermost layer of the hair that is composed of round cells; often absent in fine and naturally blond hair.
technical term for beaded hair.
infestation of the hair and scalp with head lice.
(end bond) chemical bond that joins amino acids to each other, end to end, to form a polypeptide chain.
technical term for dandruff; characterized by excessive production and accumulation of skin cells.
pityriasis capitis simplex
technical term for classic dandruff; characterized by excessive production and accumulation of skin cells.
severe case of dandruff characterized by an accumulation of greasy or waxy scales mixed wth sebum, that stick to the scalp in crusts.
a long chain of amino acids liked by peptide bonds.
temporary hair loss experienced at the conclusion of a pregnancy.
long, coiled complex polypeptides made of amino acids.
variety of canities characterized by alternating bands of gray and pigmented hair throughout the length of the hair strand.
a weak, physical, cross-link side bond between adjacent polypeptide chains.
dry, sulfur-yellow, cup-like crusts on the scalp in tinea favosa or tinea favus.
bonds that cross-link the polypeptide chains together and are responsible for the extreme strength and elasticity of human hair.
(resting phase) the final phase in the hair cycle that lasts until the fully grown hair is shed.
long,coarse, pigmented hair found on the scalp, legs, arms, and bodies of males and females.
technical term for ringworm, a contagious condition caused by fungal infection and not a parasite; characterized by itiching, scales, and sometimes, painful lesions.
(tinea favus) fungal infection characterized by dry, sulfur-yellow, cup-like crusts on the scalp called scutula.
scientific study of hair and its diseases and care.
technical term for split ends
technical term for knotted hair; it is characterized by brittleness and the formation of nodular swellings along the hair shaft.
(lanugo hair) 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.
the shape of the hair strands; described as straight, wavy, curly, and extremely curly.
hair that forms in a circular pattern on the crown of the head.
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CHAPTER 21 PART 1
CHAPTER 21 PART 2
CHAPTER 21 PART 4
CHAPTER 21 PART 3
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