Skin Structure and Function Flashcards
What is glabrous skin?
Smooth skin (hairless)
What is unique to the epithelium?
It has a basement membrane and no blood vessels or nerves pass through the basement membrane
What are the layers of skin from deep to superficial?
Stratum basale Stratum spinosum Stratum granulosum Stratum lucidum Stratum corneum
What distinguishes the stratum basale?
Mitotically active cells
One cell thick
Has melanin
What distinguishes the stratum spinosum?
Spiny processes
Multiple layers thick
Doesn’t stain well
What distinguishes the stratum granulosum?
Produces products used in the water barrier
Tightly packed
Stains dark because of granules
What distinguishes the stratum lucidum?
It is found only in thick skin
Subdivision of stratum corneum
What distinguishes the stratum corneum?
Keratinized cells
Mnemonic for remembering layers of epithelium
Come Let’s Get Sun Burned
Where are apocrine glands found?
Axilla, genitals, anus
Where are eccrine glands found?
Everywhere that apocrine glands are not found
Where are sebaceous glands found?
In non-glabrous skin
What creates the water barrier in skin?
Tonofibrils combined with keratohyalin within cell cytoplasm which then form the cell envelope
Where is tonofibril synthesized?
Stratum basale cells
Where is keratohyalin created?
Stratum granulosum
