What a "SHAFT"!
Not a layer of the hair shaft
What is the?
Cuticle
Cortex
Hair Fiber
Medulla
Major Chemical Elements that make up human hair
What is Carbon, Oxygen, Hydrogen, Nitrogen & Sulfur (COHNS)
Not a main type of body hair
What is
terminal
vellus
Anagen
lanugo hair?
Component of hair defined as thickness or or diameter of individual hair strand
What is texture?
Not a living portion of hair below the skin surfaceq
What is the arrector pili muscle?
Best description of the Medulla
What is the Hair pith or Core
Percent of protein hair is made of
What is 90%?
Hair can shed in this growth cycle
What is the telogen phase?
Cause of dry hair & Scalp
What is inactive sebaceous glands?
Two parts of the strand of human hair
What are the root & shaft?
Provides strength, elasticity, & Color to hair shaft
What is the Medulla
Long chain of amino acids linked by peptide bonds
What is Polypeptide Chain?
Phase of hair growth cycle the follicle canal shrink & detach from dermal papilla?
What is the catagen phase?
Type of hair with the largest diameter & requires more processing
What is Coarse hair?
Living portion of hair defined as the structure in skin or scalp surrounding the root and anchors hair into the skin
What is the hair follicle?
Outermost layer of hair
What is the Hair Cuticle?
Three different types of side bonds that link chains of amino acids together
What is Hydrogen, Salt & Disulfide?
Three growth cycles of human hair
What are Anagen, Catagen & Telogen?
Measurement that describes number of hair strands on 1 square inch of the scalp
What is density?
Portion of the hair root structure that supplies nutrients for hair growth
What is the dermal papilla?
to understand hair & Scalp properties
Situation a cosmetologist would allow the hair to cool before styling?
What is when Hydrogen side bonds have been broken by heat from a curling iron?
Growth phase new hair is produced
What is anagen?
Hair's ability to absorb moisture
What is porosity?
Hair, skin & nails are part of this system
What is integumentary?