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Thin Skin

The epidermis is the most superficial layer of the skin and it made up of stratified squamous epithelium. The cells of the epidermis are arranged in identifiable strata (layers) and skin is clssified as thin or thick skin based on the presence (thick) or absence (thin) of one of the strata.

This slide is thin skin so it only has 4 of the 5 possible layers. From deep to superficial the strata are the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum. The stratum basale has two types of cells in it; stem cells that produce replace lost cells and melanocytes which produce melanin. The stratum spinosum is the next layer has keratin producing cells (keratinocytes). The stratum granulosum looks granular due to a protein being made that helps bind the cells keratin. The last layer is the stratum corneum which is composed of dead cells that are constantly falling off.

Slides on this page were made by students between the spring of 2018 and the spring of 2020. Go through the diffrent student pictures and compare them to your lab book picture. Then slect one to draw on paper. Label the different strata.

Lab Book Image Student Images
Simple columnar epithelium Labeled
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Thin Skin
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Thin Skin