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60 Cards in this Set
- Front
- Back
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What are the functions of the oral cavity?
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1. Digestion inlet and partial food processing via 3 paired salivary glands.
2. Phonation - manipulate speech sounds 3. respiration - inlet for upper respiratory tract |
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The oral cavity opens into the pharynx via what?
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The oropharyngeal isthmus
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The oral cavity is divided by the dental arches into two spaces called?
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1. Oral vestibule - between dental arches and cheeks and lips
2. Oral cavity proper - within dental arches |
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What bone suspends elements of the soft palate?
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Pterygoid processes of the sphenoid bone
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What muscle arises from the scaphoid fossa at the base of medial pterygoid plate?
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Tensor veli palatine m
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The lip of bone over the mandibular foramen is called?
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The lingula
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Anterior and superior to the mylohyoid line on the mandible is a space called?
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Sublingual fovea. Inferior to the mylohyoid line is a space called the submandibular fovea
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The incisive canals of the maxilla allow passage of what?
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1. Posterior septal branch of sphenopalatine artery
2. Nasopalatine n |
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The origin of the musculus uvulae m is what?
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The posterior nasal spine
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What is more anterior the greater or lesser palatine foramen?
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The greater palatine foramen. It transmits the greater palatine foramen which takes a turn anteriorly to supply the hard palate. The lesser palatine n supplies the soft palate and exits the lesser palatine foramen.
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What function does the hamulus of the sphenoid bone play?
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It acts as a pulley system for the tensor veli palatini m and is the attachment site for the pterygomandibular raphe.
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How many teeth do we have?
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16 maxillary and 16 mandibular for a total of 32 teeth.
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Nerves and vessels enter a tooth through what opening?
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The apical foramen of the tooth root.
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What is the content of the pulp cavity?
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1. Connective tissue
2. nerves 3. vessels |
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What are the layers of the of a tooth?
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1. enamel
2. dentine 3. Pulp cavity |
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The tooth is broken up into 3 segments called?
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1. crown
2. neck 3. Root |
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Children have what type of teeth?
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Deciduous
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The deciduous dental arcade consists of what type of teeth?
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2I, 1C, 2M. Inciser, canine, molar
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The permanent dental arcade consists of what teeth?
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2I, 1C, 2P, 3M. Inciser, canine, premolar, molar
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The primary site of odontogenic infection is what region of the tooth?
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The pulpal chamber
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The upper molar tooth roots are in close approximation to what sinus?
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The maxillary sinus
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The lower third molar roots are in close approximation with what?
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The mandibular canal
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Impacted wisdom teeth could damage what structures closely associated with the tooth?
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The maxillary sinus
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The masticatory mucosa covers what areas of the oral cavity?
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cover the roof of the mouth and dorsum of tongue, protecting this area during chewing. Tough KERATINIZED layer
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The alveolar (lining) mucosa covers what area of the oral cavity?
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Cheeks, lips and floor of the mouth. It is non-keratinizing
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What mucosa layer covers the teeth and lines the alveolar processes of the maxillae and mandible?
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Gingivae (gums)
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What is the modiolus?
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A connective tissue nodule that marks the interface of the buccinator with the cirumoral fibers of the orbicularis oris
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What is the function of the pterygomandibular raphe?
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To provide continuity between the oral cavity and pharynx by acting as an attachment site for the buccinator m and superior pharyngeal constrictor m
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Where is the duct opening for the submandibular gland located?
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The floor of the mouth below the tongue and just lateral to the lingual frenulum
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Where is the duct opening for the sublingual gland located?
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Several duct openings exist on the floor of the mouth.
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What are the functions of tongue?
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1. Mastication
2. taste 3. deglutition 4. oral cleansing |
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The root of the tongue is attached to what structures?
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1. Mandible
2. Hyoid |
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What are the 4 types of papillae associated with the oral part of the tongue?
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1. vallate
2. fungiform 3. filiform (no taste buds, and sensitive to touch) 4. foliate papillae 4. |
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What is the name for the place where the thyroid gland descended?
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The foramen cecum, the proximal part of the thyroglossal duct.
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The masticatory mucosa of the roof of the mouth is filled with what type of mucus secreting glands?
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Palatine glands
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The anterior most portion of the palatine raphe, that splits the two incisers is called what?
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The incisive papilla
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Lateral extensions off the palatine raphe are called?
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Transverse palatine folds
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The soft palate is continuous laterally with the walls of the pharynx and attaches posteriorly to what structure?
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The tongue
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What is the function of tensor veli palatini?
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Tenses soft palate
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What is the only muscle of the soft palate not innervated by the vagus?
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Tensor veli palatini
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What is the action of the palatopharyngeus m?
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Depresses soft palate and elevates the pharynx
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What muscle elevates the uvula?
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musculus uvulae
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What is the action of the palatoglossus m?
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depresses the soft palate
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The tendon of tensor veli palatin m originates from what bony structure?
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The palatine bone. Need to look up
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What muscles pull down on the soft palate and pull up on the tongue and pharyngeal wall?
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Palatoglossus and palatopharyngeus
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All the muscles of the soft palate are innervated by the vagus except what muscle?
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Tensor veli palatini m is innervated by a branch off the nerve to the medial pterygoid m (V3)
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What nerve innervates the muscles of the oral vestibule?
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CN7
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VE to all glands and vessels above the level of the oral fissure are innervated by what nerves?
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CN7 for parasympathetics and internal carotid plexus for sympathetics.
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VE to all glands and vessels below the level of the oral fissure are innervated by what nerves?
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CN7 supplies parasympathetics from CN7 via chorda tympani and external carotid plexus supplies sympathetics
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The superior alveolar nn supply what structures?
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The maxillary teeth and gingivae of oral vestibule
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The incisive n supplies what?
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The anterior mandibular teeth. It does not exit through the incisive foramen that is the nasopalatine n
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Anesthetizing the maxillary teeth individually through the vestibule can have what complications?
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penetration of floor of nose
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What are the main branches of the external carotid artery that have branches supplying the oral cavity?
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1. Lingual
2. Facial 3. Ascending pharyngeal 4. Maxillary |
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What areas of the oral cavity does the lingual artery supply?
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sublingual and submandibular regions
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What are the main branches of the facial artery supplying the oral cavity?
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1. Submental artery (submandibular region)
2. Superior and inferior labial arteries (oral fissure and lips) 3. Ascending palatine artery (soft palate) |
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The palatine branch of the ascending pharyngeal artery supplies what structure?
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The soft palate
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The inferior alveolar artery ends as what artery?
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The mental artery to supply the chin and lower lip
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The greater palatine artery supplies what structures?
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It branches off the maxillary artery to supply the hard palate and palatal gingivae. The lesser palatine artery supplies the soft palate
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The sphenopalatine artery supplies what structures of the oral cavity?
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The anterior part of hard palate and palatal gingivae
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The infraorbital artery gives off what branch that supplies the maxillary I, C and vestibular gingivae.
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The anterior superior alveolar artery
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