What's that Word?
Tube-like opening for sweat glands on the epidermis
Pores
Also known as the spiny layer
Stratum Spinosum
May play a role in how the skin ages
What is the sun?
Another word for skin
What is Integumentary system?
Another word for sweat glands
What are sudoriferous glands?
Hydrating fluids found in the skin; hydrophilic agent with water-binding properties
Hyaluronic Acid
In this active layer, cells undergo continuous cell division (mitosis) to replenish the regular loss of skin cells shed from the surface
Stratum Germinativum
UVA radiation(aging rays) contributes to ___ % of sun's ultraviolet radiation reaching the Earth's surface
What is 95?
Skin that is slightly moist, soft, smooth, and somewhat acidic
What is healthy skin?
Oily substance that protects the surface of the skin and lubricates both the skin and hair
What is sebum?
TEWL
Transepidermal Water Loss, water loss caused by evaporation on the skin's surface
This layer is thickest on the palm of the hands and soles of the feet, the keratinocytes in this layer contain clear keratin
Stratum Lucidum
Free radicals are chemically active ___ or molecules with unpaired electrons
What are atoms?
In each square inch of skin there are ___ nerve endings
What is 1300?
Arrector Pili Muscles attached to the hair follicles contract and cause "goose bumps"
Heat Regulation
Identify molecules that have foreign peptides and also help regulate immune response
T-Cells
Cells and oil combine to form a protective barrier layer called the acid mantle, which layer does this happen on?
Stratum Corneum
These important elements aid in cell survival
What is nourishment, protection, and continual replacement?
Average adult's skin weighs
What is 7 lbs?
Through a hyperproduction of cells and blood clotting, injured skin can restore itself to its normal thickness
Protection
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
Langerhans Immune Cells
Natural moisturizing substances such as triglycerides, ceramides, waxes, fatty acids and other intercellular lipids are made in this layer
Stratum Granulosum
Many age-related diseases such as cataracts and neurological impairment are partically attributed to
What is glycation?
Controls the skins intricate functions
What are hormones, growth factors, and other biochemicals?
Signals also cause other nerves or muscles to react, nerve fibers are most abundant in the fingertips
Sensation