Читать книгу Feline Dentistry - Jan Bellows - Страница 16

Oral mucosa covers the surface of the mouth with the exception of the gingiva which is a specialized form of mucoperiosteum. The outer layer of mucosa is composed of variably pigmented nonkeratinized and parakeratinized stratified squamous epithelium. The submucosa is composed of loose connective tissue, salivary glands, blood vessels, muscle fibers, lymphatics, and salivary ducts. The submucosa of the palate is composed of dense collagen.

Oral mucosa can be categorized based on function and histology:

1 Masticatory mucosa – keratinized stratified squamous epithelium, found on the dorsum of the tongue, hard palate, and attached gingiva.

2 Lining mucosa – nonkeratinized stratified squamous epithelium, found almost everywhere else in the oral cavity, including:Buccal mucosa – inside lining of the cheeksLabial mucosa – inside lining of the lipAlveolar mucosa – covering the alveoli extending to the buccal/labial mucosa.

3 Specialized mucosa – in the regions of the taste buds on lingual papillae on the dorsal surface of the tongue. It contains nerve endings for general sensory and taste perception as well as filiform keratin projections on the hard palate mucosa.

Figure 1.1 (a) Maxilla. (b) Maxillae, mandibles and sublingual areas. (c) Right maxilla and mandible.