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15 Cards in this Set

  • Front
  • Back
The oral cavity is lined with?
stratified stratified squamos epithelium that varies in its chatacteristics depending on location and function.
Oral cavity lined with?
Oral mucosa
Lining mucosa is found?
under the tongue, the floor of the mouth, the cheeks, the inner lip and the soft palate(often called mucus membrane)
Masticatory mucosa is found?
Is found in the hard palate and gingiva.
Specialized Mucosa found?
found on the upeer surface of the tongue.
The general structure of the oral mucosa tissues consists of?
epithelial layer, the basal lamina, a layer of ct called the labina propria and a submucosal layer which may not be present in some mucosa.
3 Major regions of epithelium:
stratum basale (basal layer) where mitosis occurs, the stratum intermedium(prickle cell layer, spinosum) where cells are moving toward the lumenal surface and the stratum superficiale(outer layer), may or may not be keratinized depending on mucosal type and function.
non-epithelial cells include:
melanocytes (pigmentation), Langerhans cells(immune cells involved in antigen presentation), Merkel cells (touch receptors associated with nerve terminals) and inflammatory cells (lymphocytes, monocytes, and nuetrophils).
basal lamina regions
lamina lucida(below the basal cell layer) and lamina densa (next to lamina propia)
Lamina propria is subdivided into two layers:
Upper papillary layer and lower-reticular layer which contains numerous finbers.
Rete Ridges (Rete Peg's)?
extensions of epithelial tissue into lamina propria layer.
Papillae
extensions of lamina proria extending into the epithelial tissue. The papillae and the rete ridges interdigitate.
where is submucosa present in oral cavity?
cheeks and soft palate.
Hemidesmosome: Disc portion sits? tonofibrils,
within the plasma membrane of the epithelium cels.extend into the lamina propria layer to anchor the collagen finbers of the layer.
Holds epithelial layer to the lamina propria by?
rete ridges, hemidesmosomes, and c.t. papillae.