Test 3 Flashcards
Anything that occupies space and has weight is called
Matter
Matter with weight and volume but no define shape Is called a
Liquid
Oxygen and hydrogen combining to for water is the example of a
Chemical change
What makes up the primary composition of hair
Keratin makes up 97%
What forms amino acids
Carbon, oxygen,hydrogen and nitrogen hold hair together like chains
What does pH stand for
Potential hydrogen
If a solution has more hydrogen ions it is
Acidic
A If a solution has less hydrogen ions it is
Alkaline
What is trichilogy
The study of hair
What is the main purpose of hair
Adornment and and protection of heat, cold and injury
What part of the hair is actually alive
The hair bulb
What part does hair grow out of
The root sheath
What do the shape of hair follicles decide
The pattern of your hair
What is hair fibers
Everything u see in the mirror
What is the pH for hair
4.5-5.5
What does the papilla do
It feeds the Germal matrix
What happens in the germal matrix
Where cell division happens and where keratin is created to make the three layers of hair
What are the three layers of hair
Medulla, cortex and cuticle
What does the cortex do
Has the pigment of your hair and is what is your elasticity
What does the cuticle do
Protects the hair/ cortex and is transparent
What is density
The amount of hair follicles per square inch on they scalp
What is porosity
The hairs ability to absorb moisture and chemicals
What effects the hair
Genes, environment, products and appliances
What is elasticity
The hairs ability to stretch and go back to its original state
How much should hair stretch when wet
50%