STUDY OF THE INTERNAL WORKINGS OR FUNCTIONS OF LIVING ORGANISMS
largest organ of the body
Appendages of the skin
HAIR, NAILS, SWEAT GLANDS AND OIL GLANDS
your skin contains what fraction of your body's primary immune cells
what does the skin protect against
OUTSIDE ELEMENTS AND MICROORGANISMS
the barrier function of the skin includes
what is average pH of the acid mantle
4.5 - 5.5
what does TEWL stand for
TRANSEPIDERMAL WATER LOSS
the intercellular cement between epidermal cells is made up of, also protects cells from dehydration
the immune cells that protect us from infection
sensory nerve fibers are most abundant in the
The average bodys internal thermostat is set at___ degrees fahrenheit.
which glands excrete perspiration and detoxify the body?
the sebaceous glands
SOFTEN THE SKIN, SECRETE OIL, AND PROTECT THE SKIN FROM OUTSIDE ELEMENTS
absorption occurs through which part of the skin?
CELLS, FOLLICLES, AND PORES
it is important to understand the function of each layer of the skin because it helps you to :
CORRECTLY CHOOSE PRODUCTS AND TREATMENTS
estheticians are licensed to work on ?
THE EPIDERMIS ONLY
about 95% of the epidermis is made up of :
describe the stratum lucidum
TRANSLUCENT LAYER THAT ALLOWS SUNLIGHT TO PASS THROUGH THE SKIN
How long does it take to replace skin cells?
desquamation is the
SHEDDING OF THE SKIN CELLS IN THE OUTERMOST LAYERS OF THE STRATUM CORNEUM
Squamous cells are
Clear, transparent layer of the epidermis under the stratum corneum.
what part of the body is skin the thickest
PALM OF THE HAND
keratin and intercellular lipids are formed in the
which layer of the skin produces melanin
The layer of the epidermis where mitosis occurs and cell division
which cells in the basal layer produce pigment granules?
the thick layer of the skin beneath the epidermis
what are the 2 layers of the dermis?
PAPILLARY AND RETICULAR
______ aid in the production of collagen and elasin
what layer connects the dermis to the epidermis called:
stretch marks are caused by
DAMAGED ELASTIN FIBERS
Loss of this causes aged skin to wrinkle & sag.
subcutis or _______ tissue is found below the reticular layer
pertaining to the covering of the internal and external tissue of the body, this is not a layer of the skin
if you have folliculitis, you have
AN INGROWN HAIR
which fibers stimulate the arrector pili muscles
differences to genetic skin color are due to
THE AMOUNT OF MELANIN ACTIVATED IN THE SKIN
products that suppress melanin production by interrupting biochemical processes are referred to as
apocrine glands are most active
DURING EMOTIONAL CHANGES
what do cells need in order to survive
NOURISHMENT, TO PROLIFERATE, AND PROTECTION
what stimulates cell turnover
ARE SUPER OXIDIZERS, ATTACK CELL MEMBRANES, ATOMS OR MOLECULES WITH UNPAIRED ELECTRONS ARE CALLED
Have the greatest impact on skin aging.
which of these is an indication of free radical damage.? pale skin, dry skin, tanned skin, or red inflammed skin.
RED, INFLAMED SKIN
also referred to as "burning rays" also the strongest rays to reach the earth's surface
people with which natural hair color are particularly susceptible to sun damage
as estrogen depletes, skin begins to
LOSE IT'S TONE
estrogen used i hormone replacement therapy can come from
PLANTS OR ANIMALS
couperose veins can be caused by
ALIMENTARY PROBLEMS, HARSH COSMETICS, AND HEAT/COLD FLUCTUATIONS
what does hydro mean
the skin is composed of 2 parts:
epidermis & dermis
the skin is approximately _____ % water
the papillary layer connects the dermis to the epidermis. what is this junction called:
epidermal dermal junction
which substance is a slender outgrowth of the scalp
HOW MANY CELLS DOES THE BODY REPLACE ON A DAILY BASIS
ELASTIN & COLLAGEN ARE NOT EASILY _____ BY THE BODY
SKIN HAS NATURAL ANTIOXIDANTS TO PROTECT AGAINST SUN DAMAGE
PREMATURE AGING SKIN CAN BE CAUSED BY
SMOKING, TANNING, AND CERTAIN DRUGS
sunscreens must be _____ in order to block both uva & uvb rays
what role does estrogen play in protecting the skin
anti-inflammatory, tissue repair, and antioxidant
an esthetician's primary role is to
preserve, protect, and nourish the skin
the average adult has _____ square feet of skin, weighing ____ pounds
the most amazing feature of the skin is its ability to
what does skin absorb
primary functions of the skin
protection, sensation, heat regulation, secretion, absorption, and excretion
fat insulates the body, keeping it
where are the papillae located
bottom of the follicles
what are the most important functions of collagen
give skin strength & is necessary for wound healing
what is the function of elastin
forms elastic tissue
absorption of water and oxygen are
necessary for the skin's health
the spiny layer of the skin is called
basal cell layer is also known as
cell division is called
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