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Milady Ch.3 Physiology and Histology of the Skin
Terms in this set (51)
The study of the functions and activities performed by the body's structures.
Largest organ in the body
Skin (integumentary system)
Appendages of the skin
Hair, nails, sweat glands, and oil glands
Sensory nerve fibers are most abundant in the?
The skin is...
Thin, yet strong, protective barrier to outside elements and microorganisms.
What is the acid mantles average PH level?
What is the acid mantle part of?
The skins natural barrier function.
Transepidermal Water Loss (TEWL)
Water loss caused by evaporation on the skin's surface.
Lipids are protective oils and are part of the ? between epidermal cells?
Body's Average Internal Thermostat
oil glands in the skin
Also known as adipose tissue
The dermis - 25x thicker than the epidermis- consists of what 2 layers?
The reticular layer (below) and the papillary layer (above)
Stretch marks are caused by:
Damaged elastin fibers
Damage to the reticular layer elastin fibers as they break down causes what?
Sagging, wrinkles and intrinsic aging.
The dermal/epidermal junction
Connects the dermis to the epidermis
Estheticians cannot treat the skin beyond the what?
5 layers of epidermis
1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum germinmativum
Composed of keratin, comprise 95% of the epidermis.
also known as the basal cell layer, the deepest live layer of the epidermis that produces new epidermal skin cells and is responsible for growth
The stratum germinativum contains ..?
Pigment carrying granules that produce melanin, a complex protein.
the production of keratin and intercellular lipids take place here
thin clear layer of dead skin cells under the stratum corneum. the thickest layer is on the palms of the hand and soles of the feet
Keratinocytes are continually shed in a process called..?
Average cell turnover rate for adults
Surface cells are flat and hardened
Squamous and Cornified
Differences in genetic skin color are due to the amount of ? activated in the skin.
Products that suppress melanin production by interrupting biochemical processes are referred to as?
Brightening agents. Some called tyrosinase inhibitors.
inflammation of the hair follicles
Technical term for nails
Nerves that carry information from the central nervous system to the muscles of the body.
The nerves that carry sensations of touch, taste, heat, cold, pain, and other modalities from the body to the central nervous system.
What are the glands that secrete oil and sweat?
Sebaceous - oil
Sudoriferous - sweat
How long does it take to grow out a fingernail?
What forms a network of pathways for conducting information throughout the body?
Sebaceous glands are larger on the ? than the rest of the body.
Face and scalp
The excretion of sweat is controlled by
Excess fluid loss results in?
Loss of electrolytes causing dehydration
Connect to oil glands instead of pore openings
? is sensitive to adrenaline, so sweating can occur during times of anxiety, stress, fear, sexual arousal, and pain.
In order to survive cells need what important elements?
Nourishment, protection and the ability to function properly through respiration
Play an important role in the immune system by attacking virus-infected cells, foreign cells and cancer cells.
Removes and depletes lipids
Alpha Hydroxy Acids, Alpha Lipoeic acid and other growth factors stimulate...
cell turnover rate and reduce visible sings of aging.
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.
Proteins, enzymes, vitamins and metabolites are all ?
What is glycation caused by?
Elevation in blood sugar
When ? is depleted skin begins to lose its tone.
Suggested to balance estrogen for women experiencing menopause is?
Hormone replacement therapy (HRT)
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