LabX Hair Theory Test (102.14)

102C.14

Adornment, protection from cold and protection from injury.

These are the primary functions of hair, serving both aesthetic and practical purposes.

tightly curled/coily hair

An elliptical shaped hair follicle produces what type/shape of hair?

Active

This stage of hair growth lasts from 2 to 6 years.

Cilia

The technical term for eyelash hair.

Medulla, Cortex and Cuticle

The three major layers of the hair.

Germinal Matrix.

The papilla is located at the bottom of the follicle and supplies nourishment to the:

Papilla

Hair that has been pulled out from the roots can grow back as long as the _______ has not been destroyed.

Cortex

In which part of the hair is the majority of melanin located?

hair color.

The amount, size and distribution of Eumelanin and Pheomelanin in the hair influences:

False. Disease, medications and lack of vitamins all affect hair growth.

(T / F) Disease, medications, frequent exercise and lack of vitamins are all factors that affect hair growth.

Fine or very fine

The medulla is the central core of the hairstrand that is sometimes missing in what type of hair?

Straight

The follicle in _______ hair is typically round shaped.

hairstrand

The two primary parts of the hair are the _______ and the hair root.

hair

Trichology is the technical term for the study of:

Eumelanin

Brown/black hair color is produced by which type of melanin?

heredity

Three factors that affect the behavior of the hair are _______, products or appliances and the environment.

Catagen

The resting stage of hair growth that lasts only a few weeks.

hairstrand

The shape of the hair follicle determines the shape of the _______.

½ inch

On average, human hair grows about _______ per month.

pigmentation

Albinism is the total lack of _______ in the hair and skin.

head

Capili is the technical term for hair of the:

texture

The number-and-letter system used to categorize and identify hair _______ types include type 1 (straight), type 2 (wavy), type 3 (curly) and type 4 (tightly curled/coily).

strength / elasticity of

The cortex layer of hair consists of unique protein structures that give the hair most of its pigment and:

yellow

White hair color is at the greatest risk for sun damage and can turn _______ from too much exposure.

Telogen

The resting stage of hair growth that lasts 3-4 months.

root sheath

Hair grows from a tube-like “pocket” called the follicle or the:

stand on end

The Arrector Pili muscle causes the hair to stand on end when a person is _______ or _______.

tighter

The _______ the textured hair curl pattern, the drier the hair.the bo

the body’s perspiration.

The acid mantle is formed when sebum produced by the oil glands mixes with: