Hair Shaft
Hair Root
Composition of Hair
Hair Analysis
Hodge Podge
100
How many layers compose the hair shaft
What is three
100
involuntary muscle that causes goose bumps
What is the arrector pili
100
name the 5 elements hair is made up of
What is Carbon, Hydrogen, Oxygen, Nitrogen & Sulfur
100
thickness or diameter of the hair strand
What is texture
100
what does pH stand for
What is Potential Hydrogen
200
scale-like cells that look like shingles on a roof
What is the cuticle
200
thick, club-like structure that forms the lower part of the hair root
What is the hair bulb
200
chemical bonds that link amino acids together
What is a peptide or end bond
200
pH scale ranges from
What is 0 to 14
200
short fine downy hair
What is vellus or lanugo hair
300
innermost layer composed of round cells
What is the medulla
300
depression that contains the hair root
What is the hair follicle
300
name the 3 side bonds
What is Hydrogen, Salt & Disulfide
300
hair with low porosity is also considered
What is resistant hair
300
provides brown to black color to hair
What is Eumelanin
400
elasticity & natural color are located here
What is the cortex
400
cone-shaped area located at the base of the follicle, that fits into the hair bulb
What is the dermal papilla
400
long chain of amino acids linked by peptide bonds
What is a polypeptide chain
400
ability of hair to stretch & return to its original length
What is elasticity
400
Name the 3 stages of hair growth (in order)
What is Anagen, Catagen & Telogen
500
process where hair cells mature, fill up with protein, lose their nucleus & die
What is Keratinization
500
where do new cells originate from
What is the hair follicle
500
disulfide bonds broken by relaxers are converted to
What is lanthionine bonds
500
client has high porosity, average elasticity & coarse hair texture. what type of perm would we choose
What is acid (pH range of 4.5 to 7)
500
hair that forms a circular pattern, as on the crown
What is a whorl
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