Hair Theory
Hair Growth
Stages of Hair Growth
Hair Evaluation
Natural Hair Color
100
This is the technical name for the study of hair
What is trichology
100
The outer covering of the hair shaft is known as this
What is the cuticle
100
Hair is primarily made up of this
What is protein
100
The degree of coarseness or fineness of the hair fiber is referred to as this
What is texture
100
Melanin is found mainly in this part of the hair
What is the cortex
200
The root sheath in straight hair is typically this shape
What is oval
200
This muscle causes the hair to stand on end when a person is scared or cold
What is the arrector pili muscle
200
This is the central core of the hair shaft
What is the medulla
200
This is determined by the number of active hair follicles per square inch of the scalp
What is density
200
Melanin found in brown/black hair
What is eumelanin
300
The root sheath found in tightly curled hair is typically this shape
What is elliptical
300
Mitosis takes place in the area of the hair bulb called this
What is the germinal matrix
300
This is the resting stage of hair growth
What is telogen
300
The ability of hair to stretch and return to its original shape without breaking
What is elasticity
300
A lack of pigmentation in the hair and skin
What is albinisim
400
These factors influence the behavior of hair: heredity, products or appliances used and this
What is environment
400
Sebum mixes with the body's perspiration to form this
What is the acid mantle
400
Hair color is darker during this stage of growth
What is anagen
400
This type of porosity describes hair that is able to absorb the least amount of moisture
What is resistant
400
Bundles called melanosomes are formed by these
What are melanocytes
500
Name the four main purposes of hair
What is adornment, and protection from cold, heat and injury
500
This is filled with capillaries to supply nourishment to the cells around it
What is the papilla
500
This is the technical name for eyelash hair
What is cilia
500
Normal, dry hair is capable of being stretched to this fraction of its length
What is one-fifth
500
People with lighter colored hair have melanin here only
What is the cortex
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