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66 Cards in this Set
- Front
- Back
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in what layer of the oral cavity would you find keratinocytes, langer's cells, melanocytes, and merkel's cells?
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mucosa
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In what layer of the oral cavity would you find fat or salivary glands?
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submucosa
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The masticatory mucosa consists of which type of sse?
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keratinized sse
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the lining mucosa consists of which type of sse?
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nonkeratinized sse
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what type of mucosa is the hard palate?
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masticatory
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what makes up the submucosa of the masticatory mucosa?
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fat anteriorly
glands posteriorly |
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what makes up the submucosa of the lining mucosa?
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mostly mucous glands, bands of fibers
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what lies deep to masticatory submucosa?
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bone
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what underlies the lining submucosa?
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striated muscles
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What makes up the outer side of the lip? inner side?
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outer side: thin skin (hair present)
inner side: mucous membrane |
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where would you find labial glands?
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in the submucosa of the inner side of the lip
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what is the vermilion border?
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keratinized sse, rich blood supply (red) w no glands (dry)
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what is the name of the circular skeletal muscle of the lip?
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orbicularis oris
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Which oral cavity mucosa has tall papillae? which has shorter?
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tall papillae: masticatory mucosa
short papillae: lining mucosa |
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What divides the tongue into 2 regions? what are those regions called?
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sulcus terminalis divides tongue into papillary and tonsillar regions
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Name the 4 types of lingual papillae. which ones have taste buds?
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filiform, fungiform, circumvallate, foliate
fungiform, circumvallate and foliate have TBs |
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which type of lingual papillae has a mechanical role? which are keratinized?
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filiform - mechanical
fungiform - keratinized sse |
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Which type of lingual papillae has von Ebners glands? What are von Ebner's glands?
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circumvallate, they are lingual salivary glands
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Which types of lingual papillae have TBs on the lateral surface? Which have TBs on the upper surface?
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circumvallate and foliate have TBs on lateral surface
fungiform is only one with TBs on upper surface |
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Which type of lingual papillae are lateral infoldings? what type of glands do they have?
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foliate, serous glands
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what types of tastes work through direct activation of ion channels?
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salty and sour
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what types of tastes work through indirect GPCRs and 2nd msgrs?
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sweet and bitter
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Which types of taste work through glutamate?
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umami
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what tastes are circumvallate glands receptive to?
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bitter and umami
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What glands constitute the major salivary glands and what types of acini make up each one?
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Parotid: serous
Submandibular: mixed, mostly serous Sublingual: mixed, mostly mucous |
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which type of major salivary gland contains secretory zymogen granules?
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parotid gland (secretes amylase)
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What is the pathway from the ascini to the oral cavity in the parotid glands?
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ascini --> intercalated ducts --> striated ducts --> secretory/excretory/interlobular ducts --> oral cavity
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What do the intercalated ducts in the parotid gland secrete?
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secrete bicarbonate, absorb chloride
(simple cuboidal) |
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What do the striated ducts of the parotid glands do?
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secrete K+
resorb Na+ (low columnar) |
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What do the excretory/interlobular ducts do?
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connect to oral cavity
(pseudostratified columnar) |
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what kind of ducts are found in the submandibular glands?
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long striated ducts
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what kind of ducts are found in the sublingual glands?
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poorly developed intercalated ducts and striated ducts
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What kinds of glands are the minor glands and what kind of ducts do they have?
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mostly mucous (some serous), w short ducts
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Where are the minor glands located?
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submucosa of palates, tongue, lips, cheek
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What is the antibacterial aspect of saliva? what provides the immunologic protection?
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antibacterial: lysozyme
immunologic: plasma cells --> IgA |
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how many baby teeth? how many permanent?
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20 baby, 32 permanent w wisdom teeth (28 w/o)
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what is the anatomical crown? clinical crown?
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anatomical: all parts covered by enamel
clinical: parts covered by enamel above the gum |
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what is the root of the tooth?
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all the parts below the enamel covered portions. is anchored in alveolar bone
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what makes up the bulk of the tooth?
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dentin
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what cells produce dentin?
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odontoblasts
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where are odontoblasts located in the tooth?
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in the dental pulp
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What covers the dentin in the crown region?
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enamel
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T/F enamel can be replaced
T/F dentin can be replaced |
F - enamel cannot be replaced
T - dentin CAN be replaced |
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what produces enamel?
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ameloblasts, enamel rods
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What is cementum?
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covering of dentin in the root region
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What produces cementum?
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cementocytes
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what layer of the tooth can be either acellular or cellular?
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cementum
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what part of the tooth contains lacunae and cananiculi?
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cementum
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what type of tissue makes up dental pulp?
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loose connective tissue
(fibroblasts, lymphocytes, collagen) |
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What part of the tooth contains blood vessels and nerves?
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dental pulp
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what are some of the fxns of dental pulp?
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nutritive (to odontoblasts)
sensory (pain reception) protective (inflammatory response) |
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What are Sharpey's fibers?
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patches of loose CT collagen fibers and elastic between the fibers that anchors into the cementum, make up periodontal ligaments
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What associated structure of the tooth is vitC dependent?
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periodontal ligaments (sharpey's fibers) the collagen synthesis is vitC dependent
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What are some of the fxns of the periodontal ligaments?
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1. attachment and support
2. tension for bone remodeling during tooth mvmt 3. nutrition to adj. structures 4. proprioreception 5. aid in tooth eruption |
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what forms the bone sockets for teeth and contains immature bone?
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alveolar bone
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what is the gingiva?
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masticatory mucosa around the neck of the tooth
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what makes up the gingiva mucosa?
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keratinized sse, tall papillae
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what is the gingiva bound to?
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attached to bone or cementum by collagen and elastic fibers
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where would you find crevicular epithelium?
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gingival sulcus
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What is the nonkeratinized epithelium that attaches the gingiva to the tooth surface and how does it do this?
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attachment (jxnl) epithelium, attaches to tooth surface by hemidesmosomes
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What part of the gingiva provides a weak barrier to bacteria infection?
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attachment (jxnl) epithelium
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What is a pellicle?
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surface coating, layer of proteins and glycoproteins derived from saliva and covering tooth
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what is a dental plaque?
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pellicle laden with dead epithelial cells, inorganic cmpds and bacteria
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What is a calculus?
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mineralized plaque
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What causes dental caries?
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demineralization of enamel and/or dentin by acid products from bacteria
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what does fluoride treatment do?
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renders mineral crystals more resistant to acid dissolution
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