Layers of the skin and functions
Epidermis - correct answer Layers include keratinocytes, immune cells, and intercellular fluids.
Stratum Corneum - correct answer Hardened corneocytes (also referred to as flattened squamous cells), melanin, carrier layer, acid mantle, desquamation.
Stratum Lucidum - correct answer Clear cells; thickest on palms and soles of feet.
Stratum Granulosum - correct answer Production of keratin granules in cells; additional lipid production and excretion; desmosomes dissolved by enzymes.
Stratum Spinosum - correct answer Large layer, cell activity, desmosomes created, Langerhans immune cells, melanosome pigment distribution.
Stratum Germinativum/Basale - correct answer Singer layer of cells, cell mitosis, stem cells, merkel cells. Keratinocytes, melanocytes, and lipids are all produced here.
Stratum corneum - correct answer "The horny cells"
Stratum lucidum - correct answer "The clear cells"
Stratum granulosum - correct answer "The grainy cells"
Stratum spinosum - correct answer "The spiny cells"
Stratum germinativum/ Basale - correct answer "The germination or growth layer" Epidermis - correct answer The outer most layer of the skin
Keratinocytes - correct answer Composed of keratin, comprise 95% of the epidermis. These cells contain both proteins and lipids.
Keratin - correct answer A fiberous protein that provides resiliency and protection to the skin. Found in all layers of the epidermis. Hard " " is found in hair and nails.
Acid mantle - correct answer Cells and oil combine to form a protective layer on the stratum corneum.
15 to 20 - correct answer How many layers of cells does the stratum corneum have?
Between 0.01 to 0.04 - correct answer How thick is the stratum corneum?
Keratinocytes - correct answer Also called squamous (flat, scaly) cells.
Stratum lucidum - correct answer Thin, clear layer of dead skin cells.
Stratum lucidum - correct answer Forms finger prints and footprints.
Stratum granulosum - correct answer The production of keratin and intercellular lipids takes place here.
Stratum granulosum - correct answer Triglycerides, ceramides, waxes, fatty acids and other intercellular lipids are made here and are excreted from cells to form components of the
skin's waterproofing barrier function of the top layer.
Stratum granulosum - correct answer As cells become keratinized, they move to the surface and replace the cells shed from the stratum corneum.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller RealGrades. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
