GENERAL HISTOLOGY

Detailed explanation-1: -Oral mucosa consists of two layers, the surface stratified squamous epithelium and the deeper lamina propria. In keratinized oral mucosa, the epithelium consists of four layers: Stratum basale (basal layer) Stratum spinosum (prickle layer)

Detailed explanation-2: -In keratinized oral mucosa, the epithelium is composed of the four layers stratum basale, stratum spinosum, stratum granulosum, and stratum corneum. In nonkeratinised epithelium, the stratum basale is followed by the stratum filamentosum and the stratum distendum.

Detailed explanation-3: -In the oral cavity, keratinized mucosa is found in the gingiva and palate mucosa, whereas the non-keratinized mucosa is found in the buccal mucosa.

Detailed explanation-4: -Nonkeratinized stratified squamous epithelium is in the superficial layers of lining mucosa, such as in the labial mucosa, buccal mucosa, and alveolar mucosa, as well as in the mucosa lining the floor of the mouth, the ventral surface of the tongue, and the soft palate (see Figure 9-2).