1
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Oregon Barber License (practice test for
board exam) Questions and Answers
(100% Correct Answers) Already Graded
A+
Cuticle— Ans: Outer most layer of the hair. It consists of a single,
overlapping layer of transparent, scale-like cells that resemble
shingles on a roof. It protects the inner cortex layer and
© 2025 Assignment Expert
contributes to 20% of overall strength of hair.
The Cortex— Ans: The middle layer of the hair. A fibrous protein
core formed by elongated cells containing melanin to pigment.
Guru01 - Stuvia
Gives hair majority of its strength and elasticity. A healthy Cortex
contributes to %80 to the overall strength of the hair. Contains
melanin that determines hair color.
The Medulla— Ans: The innermost layer of hair. Sometimes absent
from hair and doesn't play a role in hair coloring. composed of
round cells.
Texture— Ans: The diameter of an individual hair.
Density— Ans: The number of hairs per square inch.
Porosity— Ans: The hairs ability to absorb moisture.
Low porosity— Ans: The cuticle is tight. The hair is resistant (difficult
for moisture or chemicals to penetrate. Thus, it requires longer
processing time.
Average porosity— Ans: The cuticle is slightly raised. Hair is normal
and processes in an average amount of time.
High porosity— Ans: The cuticle is lifted. The hair is overly porous
and takes color quickly (also fades quickly) Permed, colored,
chemically relaxed and straightened hair will have a high degree
of porosity.
, 2
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Mixed melanin— Ans: A combination of natural hair color that
contain both pheomelanin and eumelanin.
Basal cell cercinoma— Ans: Most common and least severe type
of skin cancer; often characterized by light or pearly nodules.
Bromhidrosis— Ans: Foul-smelling perspiration, usually noticeable
in the armpits and the feet that is caused by Bacteria.
Bulla (plural bullae— Ans: Large blister containing a watery fluid;
similar to vesicle but larger.
Chloasma— Ans: Aka-Liver Spots; condition characterized by
hyperpigmentation on the skin in spots that are not elevated.
Closed Comedo— Ans: Aka-White head; hair follicle is closed
© 2025 Assignment Expert
and not exposed to the environment. Sebum remains a white or
cream color and comedone appears as a small bump just under
the skin surface.
Guru01 - Stuvia
Conjunctivitis— Ans: Aka-Pink eye; common bacterial infection of
the eyes. Extremely contagious.
Contact dermatitis— Ans: An inflammation of the skin caused by
Having contact with certain chemicals or substances. Many that
are used in cosmetology.
Crust— Ans: Dead cells form over a wound or blemish while it's
healing; an accumulation of sebum and pus, sometimes mixed
with epidermal material.
Cyst— Ans: Closed, abnormally developed that contains fluid,
pus, semifluid, or morbid matter above or below the skin.
Hair Root— Ans: The part of the hair located below the surface of
the Epidermis.(outer layer of the skin).
Hair Shaft— Ans: The portion of hair that projects above the
Epidermis.
Dermatitis— Ans: Inflammatory condition of the skin.
Hair Follicle— Ans: The tube-like depression or pocket in the skin
or scalp that contains the hair root.
, 3
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Hair bulb— Ans: The lowest part of the hair strand. The thickened.
Club-shaped structure that forms the lower part if the hair root.
Arrector pili muscle— Ans: The small, involuntary muscle in the
base of the hair follicle. (The reason for goose bumps).
Dermal papilla— Ans: A small cone-shaped elevation located at
the base of the hair follicle that fits into the hair bulb. (Plural:
dermal papillae)
Dyschromias— Ans: Abnormal colorations of the skin that
accompany many skin disorders and systemic disorders.
Eczyma— Ans: An inflammatory, uncomfortable, and often
chronic disease of the skin characterized by moderate to severe
© 2025 Assignment Expert
inflammation, scaling and sometimes severe itching.
Excoriation— Ans: Skin sore or abrasion produced by scratching
or scraping.
Guru01 - Stuvia
Extrinsic Factors— Ans: Primarily environmental factors that
contribute to aging and the appearance of aging.
Sebaceous glands— Ans: Oil glands in the skin and scalp that
secrete sebum .
Keratinization— Ans: Process of creating keratin protein. A non-
living fiber.
Fissure— Ans: A crack in the skin that penetrates the dermis.
Example severely cracked hands/lips.
COHNS elements— Ans: The major elements that make up
human hair are : Carbon, Oxygen, Hydrogen, Nitrogen, and Sulfur
Amino acids— Ans: Units that are joined together end to end like
pop beads creating long chains of protein .
Peptide bond— Ans: A strong chemical bond that joins amino
acids also known as an "end bond".
Proteins— Ans: Long, coiled complex polypeptides made of
amino acids.
Polypeptide chain— Ans: A long chain of amino acids linked by
peptide bonds.
, 4
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Hydrogen bond— Ans: A weak, physical, cross-linking side bond
easily broken By water or heat.
Salt Bond— Ans: A weak physical cross link bond between
adjacent polypeptide chains. They depend on pH so they're easily
broken by strong alkaline or acidic solutions.
Disulfide Bond— Ans: A strong, chemical side bond that is
different from the physical side bond of a Hydrogen or salt bond.
Wave Pattern— Ans: The shape of the hair strand. Can be
described as straight, curly, extremely curly.
Vellus hair— Ans: Aka-"lanugo hair* is short, fine, unpigmented
and downy hair that appears on the body.
© 2025 Assignment Expert
Terminal Hair— Ans: Long, coarse, pigmented hair found on the
scalp, legs, arms, and bodies of males and females. Coarser than
vellus hair.
Guru01 - Stuvia
Anagen Phase— Ans: Aka-"Growth Phase" where new hair is
produced.
Catagen Phase— Ans: The brief transition period between the
growth and resting phases of a hair follicle.
Telogen Phase— Ans: Aka-"Resting Phase"-the final phase in the
hair cycle and lasts until the fully grown hair is shed.
Androgenic alopecia— Ans: Aka-"Androgenetic Alopecia - is hair
loss characterized by miniaturization of terminal Hair that is
converted into vellus hair. Usually the result of genetics, age, or
hormonal changes.
Free radicals— Ans: Unstable molecules that cause biochemical
aging, especially wrinkling and sagging of the skin.
Alopecia areata— Ans: An autoimmune disorder that causes the
affected hair follicles to be mistakenly attacked by a person's own
immune system.
Postpartum aloepcia— Ans: A temporary hair loss experienced
At the end of pregnancy.
For Expert help and assignment solutions, +254707240657
Oregon Barber License (practice test for
board exam) Questions and Answers
(100% Correct Answers) Already Graded
A+
Cuticle— Ans: Outer most layer of the hair. It consists of a single,
overlapping layer of transparent, scale-like cells that resemble
shingles on a roof. It protects the inner cortex layer and
© 2025 Assignment Expert
contributes to 20% of overall strength of hair.
The Cortex— Ans: The middle layer of the hair. A fibrous protein
core formed by elongated cells containing melanin to pigment.
Guru01 - Stuvia
Gives hair majority of its strength and elasticity. A healthy Cortex
contributes to %80 to the overall strength of the hair. Contains
melanin that determines hair color.
The Medulla— Ans: The innermost layer of hair. Sometimes absent
from hair and doesn't play a role in hair coloring. composed of
round cells.
Texture— Ans: The diameter of an individual hair.
Density— Ans: The number of hairs per square inch.
Porosity— Ans: The hairs ability to absorb moisture.
Low porosity— Ans: The cuticle is tight. The hair is resistant (difficult
for moisture or chemicals to penetrate. Thus, it requires longer
processing time.
Average porosity— Ans: The cuticle is slightly raised. Hair is normal
and processes in an average amount of time.
High porosity— Ans: The cuticle is lifted. The hair is overly porous
and takes color quickly (also fades quickly) Permed, colored,
chemically relaxed and straightened hair will have a high degree
of porosity.
, 2
For Expert help and assignment solutions, +254707240657
Mixed melanin— Ans: A combination of natural hair color that
contain both pheomelanin and eumelanin.
Basal cell cercinoma— Ans: Most common and least severe type
of skin cancer; often characterized by light or pearly nodules.
Bromhidrosis— Ans: Foul-smelling perspiration, usually noticeable
in the armpits and the feet that is caused by Bacteria.
Bulla (plural bullae— Ans: Large blister containing a watery fluid;
similar to vesicle but larger.
Chloasma— Ans: Aka-Liver Spots; condition characterized by
hyperpigmentation on the skin in spots that are not elevated.
Closed Comedo— Ans: Aka-White head; hair follicle is closed
© 2025 Assignment Expert
and not exposed to the environment. Sebum remains a white or
cream color and comedone appears as a small bump just under
the skin surface.
Guru01 - Stuvia
Conjunctivitis— Ans: Aka-Pink eye; common bacterial infection of
the eyes. Extremely contagious.
Contact dermatitis— Ans: An inflammation of the skin caused by
Having contact with certain chemicals or substances. Many that
are used in cosmetology.
Crust— Ans: Dead cells form over a wound or blemish while it's
healing; an accumulation of sebum and pus, sometimes mixed
with epidermal material.
Cyst— Ans: Closed, abnormally developed that contains fluid,
pus, semifluid, or morbid matter above or below the skin.
Hair Root— Ans: The part of the hair located below the surface of
the Epidermis.(outer layer of the skin).
Hair Shaft— Ans: The portion of hair that projects above the
Epidermis.
Dermatitis— Ans: Inflammatory condition of the skin.
Hair Follicle— Ans: The tube-like depression or pocket in the skin
or scalp that contains the hair root.
, 3
For Expert help and assignment solutions, +254707240657
Hair bulb— Ans: The lowest part of the hair strand. The thickened.
Club-shaped structure that forms the lower part if the hair root.
Arrector pili muscle— Ans: The small, involuntary muscle in the
base of the hair follicle. (The reason for goose bumps).
Dermal papilla— Ans: A small cone-shaped elevation located at
the base of the hair follicle that fits into the hair bulb. (Plural:
dermal papillae)
Dyschromias— Ans: Abnormal colorations of the skin that
accompany many skin disorders and systemic disorders.
Eczyma— Ans: An inflammatory, uncomfortable, and often
chronic disease of the skin characterized by moderate to severe
© 2025 Assignment Expert
inflammation, scaling and sometimes severe itching.
Excoriation— Ans: Skin sore or abrasion produced by scratching
or scraping.
Guru01 - Stuvia
Extrinsic Factors— Ans: Primarily environmental factors that
contribute to aging and the appearance of aging.
Sebaceous glands— Ans: Oil glands in the skin and scalp that
secrete sebum .
Keratinization— Ans: Process of creating keratin protein. A non-
living fiber.
Fissure— Ans: A crack in the skin that penetrates the dermis.
Example severely cracked hands/lips.
COHNS elements— Ans: The major elements that make up
human hair are : Carbon, Oxygen, Hydrogen, Nitrogen, and Sulfur
Amino acids— Ans: Units that are joined together end to end like
pop beads creating long chains of protein .
Peptide bond— Ans: A strong chemical bond that joins amino
acids also known as an "end bond".
Proteins— Ans: Long, coiled complex polypeptides made of
amino acids.
Polypeptide chain— Ans: A long chain of amino acids linked by
peptide bonds.
, 4
For Expert help and assignment solutions, +254707240657
Hydrogen bond— Ans: A weak, physical, cross-linking side bond
easily broken By water or heat.
Salt Bond— Ans: A weak physical cross link bond between
adjacent polypeptide chains. They depend on pH so they're easily
broken by strong alkaline or acidic solutions.
Disulfide Bond— Ans: A strong, chemical side bond that is
different from the physical side bond of a Hydrogen or salt bond.
Wave Pattern— Ans: The shape of the hair strand. Can be
described as straight, curly, extremely curly.
Vellus hair— Ans: Aka-"lanugo hair* is short, fine, unpigmented
and downy hair that appears on the body.
© 2025 Assignment Expert
Terminal Hair— Ans: Long, coarse, pigmented hair found on the
scalp, legs, arms, and bodies of males and females. Coarser than
vellus hair.
Guru01 - Stuvia
Anagen Phase— Ans: Aka-"Growth Phase" where new hair is
produced.
Catagen Phase— Ans: The brief transition period between the
growth and resting phases of a hair follicle.
Telogen Phase— Ans: Aka-"Resting Phase"-the final phase in the
hair cycle and lasts until the fully grown hair is shed.
Androgenic alopecia— Ans: Aka-"Androgenetic Alopecia - is hair
loss characterized by miniaturization of terminal Hair that is
converted into vellus hair. Usually the result of genetics, age, or
hormonal changes.
Free radicals— Ans: Unstable molecules that cause biochemical
aging, especially wrinkling and sagging of the skin.
Alopecia areata— Ans: An autoimmune disorder that causes the
affected hair follicles to be mistakenly attacked by a person's own
immune system.
Postpartum aloepcia— Ans: A temporary hair loss experienced
At the end of pregnancy.
