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The oral mucosa is the mucous membrane lining the inside of the mouth. It comprises stratified squamous epithelium , termed "oral epithelium", and an underlying connective tissue termed lamina propria . [ 1 ]
The oral mucosa is the mucous membrane epithelium lining the inside of the mouth. In addition to its primary role as the beginning of the digestive system , the mouth also plays a significant role in communication .
The lamina propria is a thin layer of loose (areolar) connective tissue, which lies beneath the epithelium, and together with the epithelium and basement membrane constitutes the mucosa. As its Latin name indicates, it is a characteristic component of the mucosa, or the mucosa's "own special layer."
The mucosa of the oral cavity provides a unique ecological site for microbiota to inhabit. Unlike the teeth, the mucosa of the oral cavity is frequently shedding and thus its microbial inhabitants are both kept at lower relative abundance than those of the teeth but also must be able to overcome the obstacle of the shedding epithelia. [8]
The oral mucosa is very thin underneath the tongue, and is underlain by a plexus of veins. The sublingual route takes advantage of the highly vascular quality of the oral cavity, and allows for the speedy application of medication into the cardiovascular system, bypassing the gastrointestinal tract.
Oral mucosa. To check the oral mucosa, the patient's cheek is exposed with a tongue depressor and the tissues inspected with a penlight. Healthy tissue appears moist ...
Oral mucosa, however, is a complex multilayer structure with proliferating and differentiating cells and monolayer epithelial sheets have been shown to be fragile ...
The buccal mucosa, along with the gingival and sublingual mucosa, is part of the oral mucosa. [15] It is composed of non-keratinised tissue. Unlike intestinal and nasal mucosae, it lacks tight junctions and is instead equipped with loose intercellular links of desmosomes , gap junctions and hemidesmosomes . [ 7 ]