Figure 152

Stratified squamous epithelium of the hard palate. This photomicrograph shows a transition in the oral mucosa from a stratified squamous epithelium (on the right) to a stratified squamous parakeratinized epithelium (on the left). The flattened surface cells of the keratinized epithelium are devoid of nuclei. The layer of keratohyalin granule-containing cells is clearly visible in this type of epithelium. The flattened surface cells of the parakeratinized epithelium display the same characteristics as the keratinized cells, except they retain their nuclei; i.e., they are parakeratinized. In addition, note the paucity of keratohyalin granules present in the subsurface cells. X380.

fatty zone glandular zone soft palate

soft palate

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