Microscopic Skin Lab
Matching Internet Picture w/ Citation
Slomianka, Lutz. "Blue Histology - Integumentary System." Blue Histology - Integumentary System. N.p., 8 June 2009. Web. 10 Dec. 2015.
There are 4-5 layers in the epidermis. The 5th layer, the Stratum Lucidum, is only seen in very thick skin. The deepest layer is the Stratum Basale, which is made up of a single layer of dividing stem cells. The next layer is the Stratum Spinosum, which is several layers of cells thick and contains keratinocytes. The next layer is the Stratum Granulosum which contains a few layers of flattened cells. The most superficial layer is the Stratum Corneum which is 75% of the epidermis. It is made up of several rows of dead, keratin-filled sacs and under the microscope looks like purple hairs flaking off of the rest of the layers.