STRATIFIED SQUAMOUS EPITHELIUM – 3
The cells of this epithelium are slightly separated from each other, allowing a better perception of their shapes.
The cuboidal basal cells undergo divisions and their daughter cells move slowly toward the surface becoming progressively flattened.
The cytoplasm of the cells of the most superficial layer became stained yellow after the staining technique used in this preparation, as a result of a process of cornification (or keratinization) that these cells underwent.
Three small regions of connective tissue can be seen under the epithelium. This epithelium was obtained from the lips, an area of the body subject to much friction. Notice that, unlike the smooth deep surface of the epithelium seen in the previous page, this one has a wrinkled basal surface. In consequence, the epithelial layer and the connective tissue become strongly interlocked, increasing the adhesion of the epithelium to the connective tissue and preventing it from easily getting loose.
The cuboidal basal cells undergo divisions and their daughter cells move slowly toward the surface becoming progressively flattened.
The cytoplasm of the cells of the most superficial layer became stained yellow after the staining technique used in this preparation, as a result of a process of cornification (or keratinization) that these cells underwent.
Three small regions of connective tissue can be seen under the epithelium. This epithelium was obtained from the lips, an area of the body subject to much friction. Notice that, unlike the smooth deep surface of the epithelium seen in the previous page, this one has a wrinkled basal surface. In consequence, the epithelial layer and the connective tissue become strongly interlocked, increasing the adhesion of the epithelium to the connective tissue and preventing it from easily getting loose.
Stratified squamous epithelium. Staining: Mallory’s trichrome. Large magnification.
