Oral cavity Flashcards
What are the 3 types of oral mucosa?
Masticatory, Lining, and Specialized
True or false; the gingiva and hard palate are found in the masticatory oral mucosa
true
What is the surface epithelium in the masticatory oral mucosa
keratinized or parakeratinized stratified squamous epi
What are the 2 parts of the lamina propria of the masticatory oral mucosa?
Papillary layer and reticular layer
True or false; the papillary layer of the lamina propr. in the masticatory mucosa is where you’d find blood vessels, nerves, sensory receptors and Meissner’s corpuscles
true
Where would you find the lining mucosa of the oral cavity?
Soft palate, underside of tongue, floor of mouth, cheeks and lips
True or false; generally the surface epithelium of the lining mucosa is nonkeratinized stratified squamous q
true (sometimes parakeratinized)
What is the surface epithelium of the vermillion border (lips)
keratinized stratified squamous
True or false; areas of nonkeratinized stratified squamous is thicker than areas of keratinized
true
Where is the specialized mucosa found in the oral cavity
dorsal surface of tongue
What is unique about the filiform papillae in regards to surface epithelium
it has keratinized stratified squamous - the rest have stratified squamous
True or false; the mucosa of the tongue is thicker dorsally and thinner/smoother posteriorly
true
What are the 4 papillae?
Filiform, fungiform, foliate, and circumvallate
Which of the papillae is associated with small salivary glands that produce a serous fluid to cleanse taste buds
circumvallate (vallate)
True or false; taste buds are located on all papillae except filiform
true (when you’re FILled up you don’t want to taste anymore)
Where would you find the lingual salivary glands?
submucosa of the tongue
What do the intrinsic muscles of the tongue do?
change the shape of the tongue
What polarized columnar cell functions to produce enamel
ameloblasts
What is the hardest substance in the body?
enamel
True or false; once a tooth erupts there are no more ameloblasts - so cannot produce more enamel
true
True or false; dentin is harder than bone
true
What do odontoblasts function to repair and produce
dentin
What is predentin?
precursor to dentin before it is mineralized
True or false; dentin contains nerves and odontoblasts
true
True or false; odontoblast persist in adults
true
True or false; ameloblast persist in adults
false - they disappear once tooth erupts
What is the area beneath the odontoblasts?
dental papillae
Dental papillae which are beneath odontoblast contain what?
connective tissue with many blood vessels and nerves
What is the potential problem with dental papillae
extensive inflammation - which can effect the many blood vessels and nerves in the area
