Basale
What layer (#) is the stratum basale?
5th
What makes up stratum spinosum?
stratified cuboidal epithelium
Where is the stratum granulosum located?
Between the stratum spinosum and lucidum
Where is this area thicker in the body?
the hands and feet
What cells make up the stratum corneum?
stratified squamous epithelium
What happens in the this strata?
Cells get pushed upwards and start to die off
Stratum spinosum gives what to the skin?
strength and flexibility
What is the function of the stratum granulosum?
form a waterproof barrier helping keratinocytes ____
What is the primary function of the stratum lucidum?
additional protection and reduce friction
What do corneocytes convert from?
keratinocytes
How many cells are in the stratum basale?
millions of new cells everyday
Stratum spinosum's appearance is...
prickly or spiny
What is the function of of the stratum granulosum?
Regulates permeability and is waterproof
The stratum lucidum is located between which two strata?
strata granulosum and corneum
Corneocytes are _________ rich cells
keratin
The strata is a single row of what type of epithelium?
columnar or cuboidal resting on the basement membrane
What are langerhans cells?
specialized cells
How many layers does the stratum granulosum have and what do the cells look like?
2-5 layers of somewhat flattened cells
Why is the stratum lucidum clear?
Because it is made up of densely packed keratinocytes
How many pounds of skin cells do you shed in your lifetime?
40 pounds
What is another name for this strata?
Stratum germinativum
What are the proteins that keep the spinosum layer together?
desmosomes
What releases and contains the lipids in the stratum granulosum?
lamellar cells
What is the process of keratinization?
This change happens in keratinocytes as they transition into the stratum lucidum and is the last stage of maturation
What do hydrated corneocytes allow for?
increased elasticity