chemistry of hair
diseases and disorders
hair structure
hair type
grab bag
100
the scientific study of the hair
What is trichology
100
this is the medical term for dandruff
What is pityriasis
100
this is the part of human hair that projects above the skin
What is hair shaft
100
the ability of hair to stretch and return to its original length
What is elasticity
100
the layer that consists of transparent scalelike cells that look like shingles on a roof
What is cuticle layer
200
this is the melanin that provides color to brown or black hair
What is Eumelanin
200
when a client has seborrhic dermatitis what should you do
What is refer to a physisian
200
this is the thickened clublike structure that forms the lower part of the hair root
What is hair bulb
200
the thickness or diameter of the hair is referred to as this
What is texture
200
the term for natural hair pigment
What is melanin
300
The three different types of cross links (side bonds) that form bonds between polypeptide chains in the cortex are
What is hydrogen salt and disulfide bonds
300
this is characterized by itching scales and sometimes painful circular lesions
What is Tinea
300
the term that describes the shape of the hair strand
What is wave pattern
300
hair that has the largest diameter and usually requires more processing time
What is coarse hair texture
300
Oily hair is caused by improper washing or over active what
What is sebaceous glands
400
chemical services performed on hair with low porosity require a solution that is
What is more alkaline
400
This condition is characterized by brittleness and the formation of nodular swellings along the hair shaft
What is Trichorrhexis nodosa
400
the tiny involuntary muscle that is inserted in the base of the hair follicle
What is arrector pili
400
hair flowing in the same direction is referred to as this
What is hair stream
400
chemical bonds that hold together amino acid molecules ace called what
What is peptide bonds
500
when peptide bonds hold together very long chains of amino acids it is called this
What is polypeptide chain
500
This type of fungal infection that is characterized by red papules or spots at the opening of the hair follicle
What is tinea capitis
500
Hair is composed of protein that grows from cells originating within the
What is hair follicle
500
the resting phase of the hair cycle
What is telogen phase
500
Hydroxide chemical relaxers break disulfide bonds and convert them to what
What is lanthioneine bonds
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