ch 7 exam prep Flashcards
What is the primary reason cosmetologists need to understand the properties of the hair and scalp?
Cosmetologists are responsible for protecting their clients’ hair and scalp
The study of hair is called ________.
Trichology (trich-hair; ology-study of)
The part of the hair that is located above the epidermis is the ______.
Shaft
What does the dermal papilla do?
It supplies the nutrients that hair needs to grow (think of it as soil for a plant)
What is the function of the hair bulb?
It contains cells that form the hair strand. (Think of it as the seed of a plant)
Is the shaft a living or nonliving portion?
nonliving (above the skin=dead)
Which hair type is most likely to have a medulla?
coarse
Which part of the hair shaft plays an important role during chemical services?
The cuticle (this is what determines how much the chemicals penetrate)
Hair is made up of approximately 90 percent ______.
protein
What is another name for an end bond?
Peptide bond
If a client has extremely curly air, what is likely to be the shape of the cross section of the hair follicles?
elliptical
Does fine hair process faster or slower during chemical services?
faster (thinner=less time needed to get to the cortex)
If you can see the scalp, the hair ____is thin
density
High porosity is often caused by ______.
overprocessing
A client’s hair is brittle and breaks easily. What can you do when providing a service to protect the hair?
Use a lower-pH solution to minimize further damage to the hair (
