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upper layer. Composed of (The stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum)
The Stratum Corneum
outermost layer. Dead, keratinized cells. Barrier to light, heat, chemicals, microorganisms
The Stratum Granulosum
two or three layers. Flattened cells. Active keratinization. Lose nuclei. Compact and brittle
The Stratum Germinativum
rests on basement membrane. Lowermost layer called stratum basale. New cells produced here (mitosis).
covers most of the surface of the body. Three parts - cuticle, cortex, medulla. Consist of Shaft, Root, and Arrector pili.
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