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41 Cards in this Set
- Front
- Back
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space between lips, cheeks and teeth?
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oral vestibule
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space limited by maxillary and mandibular dental arches?
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Oral cavity proper
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3 major components of saliva?
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Amylase, lactoferrin and lysozymes, secretory immunoglobulin
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Oral cavity is covered by what type of mucosa?
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stratified squamous epithelium
*Keratinized and parakeritinized (DICT): gingiva, dorsal part of tounge and hard palate *nonkeratinized: rest of oral cavity (looser CT) |
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How does the oral cavity differ from typical GI wall?
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no muscularis mucosae
small salivary glands in submucosa muscularis externa is atypically sk m no serosa or adventia |
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What is the vermillion zone and why is it red?
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Border of lips
Has a high amount of vascularity and a thin dermis and high dermal papillae |
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T or F
Vermillion zone is nonkeratinized |
FALSE
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Name the main groove on the tongue and what two areas does this groove divide?
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TERMINAL GROOVE
posterior part: lingual tonsil Anterior part: numerous mucosal projections |
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contains 4 intrinsic and 4 extrinsic skeletal mm?
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tongue
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Largest structure in oral cavity and covered by a mucous membrane?
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tongue
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What 4 intrinsic muscles does the tongue contain?
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sup/inf longituninal
vertical transverse |
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patient presents with tongue stiffening. upon examination you notice that it is difficult to see the frenulum. what is the diagnosis?
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Ankyloglossia
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Minor salivary glands are known as?
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Papillae
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most numerous papillae and are feathery and contain NO tastebuds?
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Filiform
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Most numerous at apex and sides of tongue?
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Fungiform
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small posteriolateral folds that contain taste buds? hint:infants have more than adults
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Foliate
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Closely associated with taste buds concerning removal of food?
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Von Ebners glands
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Looking at teh tongue one notices a strange pattern of 8 bumps. what could these be? describe
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Circumvallate papillae: have 7-12 and taste buds on sides
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Lipase is secreted by von ebners. why?
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To prevent hydrophobic layer over taste buds
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How many deciduous teeth and primary teeth does the average human being have in his lifetime?
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20/32
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Teeth for cutting? grasping and tearing? crushing?
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incisors
canines premolars/molars |
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name the parts and components of a tooth
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Crown, Neck, Root
Enamel, cementum, dentin, pulp cavity |
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Hardest substance in the human body? what makes this?
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enamel-ameloblasts
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Patient comes in and complains that her teeth have begun to turn a dark shade almost red in the sunlight. diagnosis?
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porphyrias (erythrodontia)
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the bulk of the tooth and second hardest substance in body?
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DENTIN
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How is dentin made? is it repairable?
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Odontoblasts make predentin which is then mineralized to dentin.
YES this can be repaired |
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This area of the tooth is sensitive to pain, carries mainly vessels and contains odontoblasts in its perifery
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pulp cavity
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Name the parts of the developing tooth from top to bottom.
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ameloblasts (die after emerging tooth), enamel, dentin, odontoblasts
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Anchors periodontal ligament to roots of tooth and is made by cementoblasts?
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cementum - "as hard as bone"
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Periodontal ligament is composed of what? specific! also what is the action?
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sharpey's fibers ( DICT- mainly type 1 collagen)
Shock absorber |
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gingiva is attached to enamel via?
what is the area inbetween? |
juctional epithelium
Gingival sulcus |
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Patient presents with loose teeth. Discoloration is noticed. The man happens to have been homeless for the past year. diagnosis?
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Scurvy- vit c deficient
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difference between ducts and secretory cells?
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ducts: deliver saliva
secretory cells: moisten and begin digestion |
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DUCT SYSTEM
1) continuous with acini 2) cuboidal epithilieum 3) Large, more CT, columnar |
1) intercalated
2)striated 3)interlobular |
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stain dark and are protein rich secretion?
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serous
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Thick secretion that stains light and abundant in CHO?
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Mucous cells
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Largest salivary gland that is exclusively serous secretion?
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Parotid Gland
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Gland with mixed secretion? hint: accounts for 70% of salivary volume
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Submandibular
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Serous demilune is associated with what gland?
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Submandibular and sublingual
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Smallest gland (mostly open on floor of mouth) and is primarily mucous secretion?
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sublingual
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A cystic fibrosis patient still has function of what gland?
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parotid ( no mucous units)
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