Answer
•Stratum basale
-A single layer of cuboidal to low columnar stem cells and keratinocytes resting on the basement membrane
•Stratum spinosum
-Produce more and more keratin filaments which causes cell to flatten; the higher up in this stratum, the flatter the cells appear
•Stratum granulosum
-Consists of three to five layers offlat keratinocytes
•Stratum lucidum
-Seen only in thick skin, transparent
•Stratum corneum
-Up to 30 layers of dead, scaly, keratinized cells
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Layers of the Epidermis Page 179
