Cuticle - CORRECT ANSWER-Outer most layer of the hair. It consists of a single,
overlapping layer of transparent, scale-like cells that resemble
... [Show More] shingles on a roof. It
protects the inner cortex layer and contributes to 20% of overall strength of hair.
The Cortex - CORRECT ANSWER-The middle layer of the hair. A fibrous protein core
formed by elongated cells containing melanin to pigment. 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 - CORRECT ANSWER-The innermost layer of hair. Sometimes absent
from hair and doesn't play a role in hair coloring. composed of round cells.
Texture - CORRECT ANSWER-The diameter of an individual hair.
Density - CORRECT ANSWER-The number of hairs per square inch.
Porosity - CORRECT ANSWER-The hairs ability to absorb moisture.
Low porosity - CORRECT ANSWER-The cuticle is tight. The hair is resistant (difficult for
moisture or chemicals to penetrate. Thus, it requires longer processing time.
Average porosity - CORRECT ANSWER-The cuticle is slightly raised. Hair is normal
and processes in an average amount of time.
High porosity - CORRECT ANSWER-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.
Mixed melanin - CORRECT ANSWER-A combination of natural hair color that contain
both pheomelanin and eumelanin.
Basal cell cercinoma - CORRECT ANSWER-Most common and least severe type of
skin cancer; often characterized by light or pearly nodules.
Bromhidrosis - CORRECT ANSWER-Foul-smelling perspiration, usually noticeable in
the armpits and the feet that is caused by Bacteria.
Bulla (plural bullae - CORRECT ANSWER-Large blister containing a watery fluid;
similar to vesicle but larger.
Chloasma - CORRECT ANSWER-Aka-Liver Spots; condition characterized by
hyperpigmentation on the skin in spots that are not elevated.
Closed Comedo - CORRECT ANSWER-Aka-White head; hair follicle is closed 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.
Conjunctivitis - CORRECT ANSWER-Aka-Pink eye; common bacterial infection of the
eyes. Extremely contagious.
Contact dermatitis - CORRECT ANSWER-An inflammation of the skin caused by
Having contact with certain chemicals or substances. Many that are used in
cosmetology.
Crust - CORRECT ANSWER-Dead cells form over a wound or blemish while it's
healing; an accumulation of sebum and pus, sometimes mixed with epidermal material.
Cyst - CORRECT ANSWER-Closed, abnormally developed that contains fluid, pus,
semifluid, or morbid matter above or below the skin.
Hair Root - CORRECT ANSWER-The part of the hair located below the surface of the
Epidermis.(outer layer of the skin).
Hair Shaft - CORRECT ANSWER-The portion of hair that projects above the Epidermis.
Dermatitis - CORRECT ANSWER-Inflammatory condition of the skin.
Hair Follicle - CORRECT ANSWER-The tube-like depression or pocket in the skin or
scalp that contains the hair root.
Hair bulb - CORRECT ANSWER-The lowest part of the hair strand. The thickened.
Club-shaped structure that forms the lower part if the hair root.
Arrector pili muscle - CORRECT ANSWER-The small, involuntary muscle in the base of
the hair follicle. (The reason for goose bumps).
Dermal papilla - CORRECT ANSWER-A small cone-shaped elevation located at the
base of the hair follicle that fits into the hair bulb. (Plural: dermal papillae)
Dyschromias - CORRECT ANSWER-Abnormal colorations of the skin that accompany
many skin disorders and systemic disorders.
Eczyma - CORRECT ANSWER-An inflammatory, uncomfortable, and often chronic
disease of the skin characterized by moderate to severe inflammation, scaling and
sometimes severe itching.
Excoriation - CORRECT ANSWER-Skin sore or abrasion produced by scratching or
scraping.
Extrinsic Factors - CORRECT ANSWER-Primarily environmental factors that contribute
to aging and the appearance of aging.
Sebaceous glands - CORRECT ANSWER-Oil glands in the skin and scalp that secrete
sebum .
Keratinization - CORRECT ANSWER-Process of creating keratin protein. A non-living
fiber.
Fissure - CORRECT ANSWER-A crack in the skin that penetrates the dermis. Example
severely cracked hands/lips.
COHNS elements - CORRECT ANSWER-The major elements that make up human hair
are : Carbon, Oxygen, Hydrogen, Nitrogen, and Sulfur
Amino acids - CORRECT ANSWER-Units that are joined together end to end like pop
beads creating long chains of protein .
Peptide bond - CORRECT ANSWER-A strong chemical bond that joins amino acids
also known as an "end bond".
Proteins - CORRECT ANSWER-Long, coiled complex polypeptides made of amino
acids.
Polypeptide chain - CORRECT ANSWER-A long chain of amino acids linked by peptid [Show Less]