Chemical Composition of Hair 1
Chemical Composition of Hair 2
Chemical Composition of Hair 3
Disorders of the Scalp
Hair and Scalp Analysis
100
The pocket or tube-like depression in the scalp or skin that contains the hair root is the:
Follicle
100
This layer of the hair is composed of round cells, and is the innermost layer of the hair:
Medulla
100
The three different types of side bonds are:
hydrogen, salt and disulfide
100
Which of the following scalp disorders is characterized by dry, sulfur-yellow, cup-like crusts on the scalp?
Tinea Favosa
100
Chemical services performed on hair with low porosity require a solution that is:
More alkaline
200
The thickened, club-like structure that forms the lower part of the hair root is the:
Hair Bulb
200
Hair is composed of protein that grows from cells originating within the what part of the root?
Follicle
200
A weak, physical, cross-link side bond between adjacent polypeptide chains that is broken by changes in pH is a:
Salt bond
200
An infestation of the hair and scalp with head lice is:
Pediculosis capitis
200
The ability of hair to stretch and return to its original length without breaking is referred to as hair:
Elasticity
300
A small, cone-shaped area located at the base of the hair follicle that fits into the hair bulb is the:
Dermal Papilla
300
The hair shaft that emerges from the scalp is a nonliving fiber composed of:
Keratinized protein
300
Permanent waving and hair relaxers change the shape of hair by chemically altering the hair’s:
Disulfide Bonds
300
An acute, localized bacterial infection of the hair follicle that produces constant pain is a:
Furuncle
300
Hair follicles sloping in the same direction form a:
Hair stream
400
The tiny, involuntary muscle fiber in the skin inserted in the base of the hair follicle is the:
Arrector Pili
400
The major elements that make up human hair are carbon, oxygen, hydrogen, nitrogen, and sulfur, often referred to as the:
COHNS elements
400
The melanin that provides brown or black color to hair is:
Eumelanin
400
Dry hair and scalp should be treated with products that contain moisturizers and:
Emollients
500
Which layer of the hair shaft creates the shine and the smooth, silky feel of healthy hair?
Cuticle
500
A long chain of amino acids linked by peptide bonds is called a:
Polypeptide chain
500
All natural hair color is the result of pigment located in the cortex called:
Melanin