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Which is a primary reason cosmotologists need to understand the properties of the hair and scalp.
Cosmotologists are responsible for protecting their clients’ hair and scalp.
The study of hair is called?
trichology
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.
What is the function of the hair bulb?
It contains cells that forms the hair strand.
Which of the following is true about the hair shaft?
It is the nonliving portion of the hair.
Which hair type is most likely to have a medulla?
Coarse hair.
Which part of the hair shaft plays an important role during chemical service?
Hair cuticle
Hair is approximately 90 percent?
Minerals
Which type of bond is an end bond?
Peptide bond
A client’s hair is extremely curly. What is likely to be the shape of the cross-section of the hair follicles?
Elliptical
Which of the following is true about fine hair?
It may process faster during chemical services.
If you can see the scalp, the hair _______ is thin.
Density
Which of the following is true about hair porosity?
Hair 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?
Use a lower-pH solution to minimize further damage.
Which of the following is characteristic of a hair whorl?
Hair grows in a circular pattern.
Which type of hair is often referred to as peach fuzz?
Vellus hair.
In which phases of the hair cycle does hair grow?
Anagen
Which is true about the telogen phase?
Hair can shed during the telogen phase.
Your 52-year-old client is letting the hair grow out. Growth hasn’t occurred in 6 months.
The hair will grow; it just may take longer because the client is older than 50.
Which of the following is a fact about hair growth?
Hair growth rate is based on gentics.
The tube-like depression or pocket in the skin or scalp that contains the hair root is the ______ ?
Hair follicle.
The ______ is the small, involuntary muscle in the base of the hair follicle. at
Arrector pili muscle.
The middle layer of the hair is the ?
Cortex
The outermost layer of the hair?
Hair cuticle
The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and
Sulfur
The strong chemical bonds that join amino acids are called ?
Salt bond.
Hair texture is classified as
coarse, medium, or short.
The long, coarse, pigmented hair found on the scalp, legs, arms, and bodies, of males and females is called?
Terminal hair
Shaving, clipping, and cutting the hair on the head _____
Has no effect on hair growth.