WORKSHOP IN HISTOLOGY, CYTOLOGY AND EMBRYOLOGY - 2016

Chapter 4. TISSUES

Slide 31. Stratified squamous keratinized epithelium of the finger skin.

Staining: hematoxylin and eosin.

Magnification: x400.

We select an area where the Skin is sectioned vertically and all layers are clearly visible. The skin epithelium consists of six layers and rests on the basement membrane above the dermis proper (1). The first layer of the epithelium is the stratum basale (2), composed of prismatic Cells that tightly adhere to one another. The second layer is the stratum spinosum (3), whose cells are polygonal in shape with rounded nuclei, arranged in several rows. The next is the stratum granulosum (4), with cells filled with dark blue keratohyalin granules. More superficially lies the stratum lucidum (5), whose anucleate cells contain eleidin, a substance with high light-refracting properties. The superficial layers comprise a thick stratum corneum (6) consisting of keratin-filled, anucleate cornified scales, and the outermost desquamating layer.

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Slide 31. Stratified squamous keratinized epithelium of the finger skin.

Last update: 07/08/2026

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