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59 Cards in this Set
- Front
- Back
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What are the limits of the vestible?
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behind the lips
inside the cheek in front of the teeth |
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What are the limits of the oral cavity proper?
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Behind the teeth
Beneath the hard and soft palate Above the tongue Anterior to the fauces/oropharynx |
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What are the different types of mucosa?
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1) lining mucosa
2) masticatory mucosa |
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Where can you find masticatory mucosa?
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1) dorsum of tongue
2) gingiva 3) hard palate |
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Where can you find lining mucosa?
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everywhere except :
1) dorsum of tongue 2) gingiva 3) hard palate |
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What are the two layers of the masticatory mucosa?
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1) stratefied parakeratinzed epithelium (with nuclei)
3) lamina propria |
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What is in the lamina propria of the masticatory mucosa? (2)
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1) Miessner's corpusucles
2) minor salivary glands |
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What is found in the lining mucosa?
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1) stratified squamous nonkeratinized epithelium (moist)
2) lamina propria |
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What is the difference between the lining and masticatory mucosa?
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different epithelium, salivary glands in lamina propria and location
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What is the three major components of the tooth?
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1) crown
2) cervix 4) root |
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What covers each of the major components of the tooth?
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crown - enamel
cervix? root-cementum dentin is between both enamel and cementum covering the root |
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What forms the enamel?
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amelioblasts
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What forms dentin?
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odontoblasts
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What makes the cementum?
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cementocytes
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What is the relative hardness of enamel,dentin and cementum?
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Enamel - 96%
Dentin - 70% Cementum - 40-50% |
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Where are odontoblasts?
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Where the pulp cavity meets its surronding dentin
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What are the odontoblast processes and dentinal tubules?
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Dentinal tubules contain the odotoblast processes that extend into dentino-enamel or dentino-cementum junction
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What cells are lost when tooth erupts?
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amelioblast
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What cells have lacunae?
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cementocytes
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What is the periodontal ligament and what is its function?
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extend from cementum to bone to hold tooth in socket
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What is the peridontal ligament made of?
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collagen fibers
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What is on the dorsal surface of the tongue?
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1) Anterior 2/3 - papillae
2) lingual salivary glands 3) posterior 1/3 - stratified squamous parakeratinzed |
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What is on the anterior surface of the tongue?
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its lining mucosa so stratified squamous non keratinized (moist) epithelium
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Are papillae on the anterior surface of the tongue?
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NO
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Which of the tongue papillae have taste buds?
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1) Fungiform
2) foliate 3) circumvillate |
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Where are taste buds located in the different papillae?
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Fungiform - apical surface
Circumvilalte - lateral surface Foliate = ? |
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What is the different unqiue features of each papillae?
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1)filiform - short, point to back of oral cavity
2)fungiform - mushroom shaped, red 3)circumvillate - mushroom shaped and have the deep forrow 4)Foliate - lateral edge of tongue |
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What is the order of the taste buds from most numerous to least numerous?
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Most numerous
Filiform>fungiform>foliate>circumvillate |
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What are the components of the taste bud?
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1) taste pore
2) neuroepithelial cell |
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What nerves provide innervation to the taste buds?
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V
VII IX |
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What nerve provides general sensation
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Trigeminal V
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What nerve provides taste to anterior 2/3
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VII
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What nerve provides taste to posterior 1/3 of tongue?
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Glossopharyngeal IX
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What innervates the muscles of the tongue?
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Hypoglossal CN CN XII
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What is the structure of the muscles of the tongue? how are they laid out?
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at 90* to each other
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What is a salivon?
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acinus + its duct that modifies its product;
minimum physiological unit |
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What is the classification of parotid, submandibular and sublingual on the basis of morphological gland typing?
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compound acinar - parotid
compoud tubuloacinar - submandib, sublingual |
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What are the types of cells found in the glands?
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1) serous
2)mucus 3) myoepithelial |
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What types of cells are found in the parotid gland?
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1) serous
2) myoepithelial |
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What cells are found in submandibular and sublingual?
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1)serous
2) mucus 3) myoepithelial |
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What cells ARE NOT found in parotid?
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mucus
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What cells form serous demilunes in submandibular and sublingual glands?
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serous cells
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What cells are the only parenchymal cells of parotid gland?
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serous cells
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What are the three hallmarks of serous cells?
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1) display apical esinophilic granules and basal RER
2) tight cell junctions 3) PS innervation --> release granules |
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What is the highlights of the mucus cells? (3)
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1) mucinogen granules in apical cytoplasm
2) prominent golgi 3) serous demilunes can extend between them |
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Where can you find myoepithelial cells?
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1) around intercalated ducts
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What are the different kinds of ducts in the salivary glands?
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1) intercalated
2) straited 3) interlobular and excretory |
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What is the different type of epithelium for the duct system?
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simple cuboidal - intercalated
simple columnar - straited/interlobular psuedostratified columnar - interlobular stratified sqaumous - lg excertory |
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What is the function of the different ducts?
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intercalated- add bicarb to saliva
straited-remove NA and Cl from saliva, add 75% of volume interlobular- xport |
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Which cells are intensely eisoniphilic vbc of high numbers of mitochondria? why would this make sense?
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straited ducts and it would make since that they need ATP because they are probably using an ATPase to remove NA and CL from saliva
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What are the three ways we categorize each gland?
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1) morphology
2) type secretion 3) type of duct thats prominent |
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What is the categorization of parotid?
1) morphology 2) type secretion 3) type of duct thats prominent |
1) morphology -compound acinar
2) type secretion- serous only 3) type of duct thats prominent -straited prominent |
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What is the categorization of submandibular?
1) morphology 2) type secretion 3) type of duct thats prominent |
1) morphology- compoud tubuloaci
2) type secretion - serous and mucous but MOSTLY serous 3) type of duct thats prominent - straited |
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What is the cantigorization of sublingual?
1) morphology 2) type secretion 3) type of duct thats prominent |
1) morphology -compound tubuloacinar
2) type secretion - mucous acini dominant 3) type of duct thats prominent-poorly developed straited |
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How much saliva do glands produce a day?
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1.0L
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What is saliva made of?
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1) water
2) proteins 3) electrolytes 4) IgA |
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Is saliva hyper or hypotonic?
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hypo
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What makes watery/mucosy saliva?
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watery - paraswmp
symp - thick/mucosy |
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What are the functions of saliva? (6)
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1) protect oral cavity
2) limit bacteria growth 3) solubize food for taste 4) contain enzymes 5) buffer noxious agents 6) maintain teeth |
