Oral Mucosa Flashcards
What are two layers that cover all oral surfaces except teeth?
1-Stratified squamous epithelium (keratinized, non keratinized)
2-Lamia propria (CT supporting epithelium, Papillary and reticular layers)
What are the 4 cell layers of keratinized epithelium?
1-Stratum Corneum
2-Stratum granulosum
3-Stratum spinosum
4-Stratum basale
Which type of keratinized tissue does not really have a granular cell layer?
Parakeratinized
Deeply stained granules in cytoplasm of cells in granular layer are called what?
Keratohyaline granules
Which layer of the lamina propria is directly under epithelia layer is loose CT and has more cells?
Papillary layer
Which layer of the lamina propria is a dense CT fibrous layer located under papillary layer?
Reticular layer
Where is the mucosa the thinnest in the oral cavity?
Sublingual
What structure holds cells to the basal lamina?
Hemidesmosomes
What structure holds cells to cells?
Desmosomes
lips, cheeks, floor of mouth, alveolar bone, soft palate and ventral tongue are all examples of what classification of oral mucosa?
Lining mucosa (Non-keratinized)
Gingiva and hard palate are examples of what classification of oral mucosa?
Masticatory mucosa (keratinized)
Dorsal surface of the tongue is an example of what classification of oral mucosa?
Specialized mucosa (typically keratinized-taste)
The line separating the vermillion zone and skin is called what?
Vermillion border
Thin, keratinized epithelium with long CT papillae and numerous capillary loops in the papillae are typical of what zone?
Vermilion zone
The zone between the vermillion zone and labial mucosa is parakeratinized stratified squamous epithelium and is called what?
Intermediate zone
The epithelium lining the gingival sulcus is non keratinized and called what?
Sulcular epithelium
Keratinized stratified squamous epithelium occupying the embrasure between teeth is called what?
Interdental papilla
Nonkeratinized stratified squamous epithelium that is concave between peaks of the interdental papillae just below the contact area are called what?
Col
Which type of papillae on the tongue is most numerous, cover entire dorsal tongue and has no taste buds?
Filiform
Which papillae on the tongue is mushroom shaped, scattered over anterior tongue, and has taste buds on dorsal surface?
Fungiform
Which type of papillae on the tongue are the largest in size, located along sulcus terminalis, surrounded by a trench and have taste buds on lateral surface?
Circumvallate papilla
Which type of papillae on the tongue are located on the posterolateral border, are in parallel ridges with furrows and have fast buds within the furrows?
Foliate
What structure should not be present in a healthy sulcus?
Rete pegs
*they are indicative of inflammation
