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Milady Esthetics Chapter 10: physiology and histology of the skin
Terms in this set (50)
Coiled structures genital areas that secrete sweat.
arrector pili muscle
Small, involuntary muscles in the base of the hair follicle that cause goose flesh when the appendage contracts, sometimes called goose bumps and papillae.
Protective barrier of the epidermis, the corneum and intercellular matrix protect the surface from irritation dehydration.
Glycolipid materials that are a natural part of skin's intercellular matrix and barrier function.
Fibrous, connective tissue made from protein; found in the reticular layer of the dermis; gives skin its firmness. Topically, a large, long-chain molecular protein that lies on the top of the skin and binds water; derived from the placentas of cows or other sources.
Another name for a stratum corneum cell. Hardened, waterproof, protective keratinocytes these "dead" protein cells are dried out and lack nuclei.
Membranes of ridges and grooves that attach to the epidermis; contains nerve endings and supplies nourishment through capillaries to skin and follicles.
Also known as the derma, corium, cutis, or true skin; support layer of connective tissue, collagen, and elastin below the epidermis.
The structures that assist in holding cells together, intercellular connections made of proteins
the skin's surface through pores; not attached to hair follicles, secretions do not Sweat glands found all over the body with openings produce an offensive odor
Protein fiber the dermis; gives skin its elasticity and firmness.
epidermal growth factor
Abbreviated EGF; stimulates cells to reproduce and heal
endings. It is made Outermost layer of skin; a thin, protective of five layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum.
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.
Cells that stimulate cells, collagen, and amino acids that form proteins.
Hair follicles and sebaceous follicles are tube-like openings in the epidermis.
Caused by an elevation in blood sugar, glycation is the binding of a protein molecule to glucose molecule resulting in the formation of damaged, nonfunctioning structures, known as Advanced Glycation End products( a.k.a. AGES). Glycation alters protein structures and decreases biological activity
Cone-shaped elevations at the base of the follicle that fit into the hair bulb. The papillae are filled with tissue that contains the blood vessels and cells necessary for hair growth and follicle nourishment.
Hydrating fluids found in the skin; hydrophilic agent with water-binding properties.
Hydrolipidic film is an oil-water balance that protects the skin's surface.
Lipid substances between corneum cells that protect the cells from water loss and irritation.
Fiberous protein of cells that is also the principal component of skin, hair, and nails; provides resiliency and protection
Epidermal cells composed of keratin, lipids, and other proteins
Langerhans immune cells
Guard cells of the immune system that sense unrecognized foreign invaders, such as bacteria, and then process these antigens for removal through the lymph system.
White blood cells that have enzymes to digest and kill bacteria and parasites. These white blood cells also respond to allergies.
Located in the dermis, these supply nourishment within the skin and remove waste
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.lt is a protein that determines hair, eye, and skin color; a defense mechanism to protect skin from the sun.
Cells that produce skin pigment granules in the basal layer.
Pigment carrying granules that produce melanin, a complex protein.
Top layer of the dermis next to the epidermis.
A type of melanin that is red and yellow in color. People with light-colored skin mostly produce pheomelanin. There are two types of melanin; the other is eumelanin.
Tube-like opening for sweat glands epidermis.
Deeper layer of the dermis that supplies the skin with oxygen and nutrients; contains fat cells blood vessels, sudoriferous (sweat) glands, hair follicles, lymph vessels, arrector pili muscles sebaceous (oil) glands, and endings.
Chronic condition that appears primarily on the cheeks and nose and is characterized by flushing (redness), telangiectasis (distended or dilated surface blood vessels), and, in some cases, the formation of papules and pustules.
Also known as oil glands; protect the surface of the skin. Sebaceous glands appendages connected to follicles.
Oil that provides protection for the epidermis from external factors and lubricates both skin and hair.
Also known as horny layer, outermost layer of the epidermis, composed of corneocytes.
Also known as basal cell layer, active layer of the epidermis above the papillary layer of the dermis; cell mitosis takes place here that produces new epidermal skin cells and is responsible for growth.
Also known as granular layer, layer of the epidermis composed of cells filled with keratin that resemble granules; replaces cells shed from the stratum cormeun
Clear, transparent layer of the epidermis under the stratum corneum; thickest on the palms of hands and soles of feet.
Also known as spiny layer, layer of the epidermis above the stratum germinativum (basal) layer containing desmosomes, the intercellular connections made of proteins.
Also known as hypodermis; subcutaneous adipose (fat) tissue located beneath the dermis; a protective cushion and energy storage for the body.
Also known as adipose tissue; fatty tissue found below the dermis that gives smoothness and contour to the body, contains fat for use as energy, and also acts as a protective cushion for the outer skin.
Also known as sweat glands; excrete perspiration, regulate body temperature, anddetoxify the body by excreting excess salt and unwanted chemicals.
Identify molecules that have foreign peptides and also help regulate immune response.
Capillaries that have been damaged and are now larger, or distended, blood vessels; commonly called couperose skn.
transepidermal water loss
Abbreviated TEWL; water loss caused by evaporation on the skin's surface.
The enzyme that stimulates melanocytes and thus produces melanin.
Also known as aging rays; longer wavelengths ranging between 320 to 400 nanometers that penetrate deeper into the skin than UVB; cause genetic damage and cell death. UVA contributes up to 95 percent of the sun's ultraviolet radiation.
Also known as burning rays; UVB wavelengths range between 290 to 320 nanometers. UVB rays have shorter, burning wavelengths that are stronger and more damaging than UVA rays. UVB causes burning of the skin as well as tanning, skin aging, and cancer.
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