Epidermis
The outermost layer of the epidermis provides the primary barrier against water loss and microbes.
Stratum Corneum
The most abundant cell type in the epidermis.
Keratinocyte
This protein gives skin elasticity and resilience.
Elastin
This loss of water through the skin is a key measure of barrier function.
TEWL
Name the four basic tissue types
Epithelial, Connective, Muscle, and Nervous
The deepest epidermal layer where new skin cells are formed.
Stratum Germanitivum/Stratum Basale
Cells responsible for detecting pathogens and presenting them to the immune system.
Langerhans cells
This gel-like substance fills spaces between cells and helps retain moisture.
Extracellular Matrix
Lipids in the stratum corneum that help maintain hydration and barrier integrity.
Ceramides
A group of similar cells performing a common function is called this.
What is a tissue?
This is the process by which keratinocytes move upward and change form as they age.
Keratinization
Pigment-producing cells located at the basal layer.
Melanocytes
These tiny blood vessels in the dermis help nourish the epidermis.
Capillary loops
This structure stores water and decreases with age, affecting skin plumpness.
Hyaluronic Acid
The living layer of the skin primarily responsible for regeneration.
What is the Epidermis
Cells that link together to form a protective sheet and help prevent pathogen entry.
Desmosomes
This dermal cell produces collagen and elastin fibers.
Fibroblast
The junction that physically connects the epidermis to the dermis.
Basement membrane
Using harsh cleansers can strip away these important barrier components.
Natural oils/ lipids
This layer beneath the dermis primarily contains adipose tissue.
Subcutaneous/ hypodermis
The pigment in the epidermis responsible for skin color and UV protection.
Melanin
Immune cells in the dermis that release histamine during allergic reactions.
Mast cells
This dermal layer is composed of loose connective tissue.
What is the papillary dermis?
This natural protective layer on the surface of the skin helps maintain pH balance.
Acid Mantle
This process allows unspecialized cells to become specific skin cells.
Differentiation