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Chapter 7 Skin Structure, Growth, and Nutrition
Vocabulary
31
Cosmetology
Professional
09/25/2014

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Cards

Term

 

Epidermal-Dermal Junction

Definition
The top of the papillary layer where it joins the epidermis.
Term
Epidermis
Definition
The outermost and thinnest layer of the skin; is made up of five layers: Stratum Corneum , Stratum Lucidum, Stratum Granulosum Stratum Spinosum and Stratum Germinativum
Term

 

Esthetcian

Definition
A specialist in the cleansing, beautification, and preservation of the health of skin on the entire body, including the face and neck
Term
Eumelanin
Definition
A type of melanin that is dark brown to black in color. People with dark-colored skin mostly produce eumelanin. There are two types of melanin; the other type is pheomelanin.
Term

 

Keratin

Definition
Fibrous protein a cell that is also the principal component of hair and nails.
Term

 

Melanin

Definition
Tiny grains of pigment (coloring matter) that are produced by melanocytes and deposited into cells in the stratum germinativum layer of the epidermis and in the papillary layers of the dermis. There are two types of melanin: pheomelanin, which is red and yellow in color, Eumelanin which is dark brown to black.
Term

 

Melanocytes

Definition
Cells that produce the dark skin pigment called melanin.
Term

 

Motor Nerve Fibers

Definition
Fibers of the motor nerves that are distributed to the arrector pili muscles attached to the hair follicle. Motor nerves carry impulses from the brain to the muscle.
Term

 

Papillary Layer

Definition
Outer layer of the dermis, directly beneath the epidermis.
Term

 

Papule

 

Definition
Also known as pimple; small elevation of the skin that contains no fluid but may develop pus.
Term

 

Pheomelanin

Definition
A type of melanin that is red and yellow in color. People with light colored skin mostly produced Pheomelanin. There are two other type of melanin; the other type is Eumelanin
Term

 

 

Propionbacterium Acnes

Definition
Abbreviated P. Acnes; technical term for acne bacteria.
Term

 

Pustule

Definition
Raised, inflamed papule with a white or yellow center containing pus in the top of the lesion referred to as the head of the pimple.
Term

 

Reticular Layer

Definition
Deeper layer of the dermis that supplies the skin with oxygen and nutrients; contains fat cells, blood vessels, suforiferous (sweat) glands, hair follicles, lymph vessels, arrector pili muscles, sebaceous (oil) glands, and nerve endings.
Term

 

Sebaceous Glands

Definition
Also known as oil glands; glands connected to the hair f follicles. Sebum is fatty or oily secretion of the sebaceous glands.
Term

 

Sebum

Definition
Fatty or oily secretion that lubricates the skin and preserves the softness of the hair
Term

 

Secretory Coil

Definition
Coiled base of the Sudoriferous (sweat) gland.
Term

 

Secretory Nerve Fibers

Definition
Fibers of the secretory nerve that are distributed to the sudoriferous gland and the sebaceous glands. Secretory nerves, which are part of the autonomic nervous system (ANS), regulate the excretion of perspiration from the sweat glands and control the flow of sebum to the surface of the skin.
Term

 

Sensory Nerve fibers

Definition
Fibers of the sensory nerves that react to heat, cold, touch, pressure, and pain. Sensory receptors that send messages to the brain
Term

 

Stratum Corneum

Definition
Also known as the horny layer; outer layer of the epidermis.
Term

 

Stratum Germinativum

Definition
Also known as the basal cell layer; deepest, live layer of the epidermis that produces new skin cells and is responsible for growth.
Term

 

Stratum Granulosum

Definition
Also known as the granule layer; layer of the epidermis composed of cells that look like granules and are filled with keratin; replaces cells shed from the stratum corneum.
Term

 

Stratum Lucidum

Definition
Clear, transparent layer of the epidermis under the stratum corneum.
Term

 

Stratum Spinosum

Definition
The spiny layer just above the stratum germinativum layer.
Term

 

Subcutaneous Tissue

Definition
Also known as adipose or subcutis tissue; fatty tissue found below the dermis that gives smoothness and contact to the body, contains fat for use as energy, and also acts as a protective cushion outer skin.
Term

 

Sudoriferous Glands

Definition
Also known as sweat gland; excrete perspiration and detoxify the body by excreting excess salt and unwanted chemical.
Term

 

Tactile Corpuscles

Definition
Small epidermal structures with nerve endings that are sensitive to touch and pressure.
Term

 

Vitamin A

Definition
Supports the overall health of skin; aids in the health, function, and repair of skin cells; has been shown to improve the skin's elasticity and thickness.
Term

 

Vitamin C

Definition
An important substance needed to properly repair the skin and tissues; promotes the production of collagen in the skin dermal tissue ; aids in and promotes the skin healing process.
Term

 

Vitamin D

Definition
Enables the body to properly absorb and use calcium, the element needed for proper bone development and maintenance. Vitamin D also promotes rapid healing of the skin.
Term

 

Vitamin E

Definition
Helps protect the skin from the harmful effects of the sun's UV light.
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