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test 2

the mouth

the oral cavity opens onto the face through the? oral fissure(line that seperates the lips
what divides the oral cavity into two regions? the dental arches
what are the two regions inside the oral cavity? ORAL VESTIBULE-between cheeks & lips and dental arches ORAL CAVITY PROPER-enclosed by the dental arches
what forms the roof of the oral cavity? the hard and soft palate
what forms the floor of the oral cavity? the mylohyoid mm. and geniohyoid m. of tongue
the lateral walls of the oral cavity are formed mainly by which muscle? the buccinator m.
what are the contributing bones of the skeletal framework of the oral cavity? maxillae-sphenoid-temporal bones-mandible-hyoid bone-palatines
the superior part of the mandible that holds the teeth is known as the? alveolar part of the mandible
relatively, the adult dentition has how many teeth? be specific 32 total: 8 incisors-4 canines 8 premolars- 12 molars
the cheeks are formed primarily by which muscle? and is this muscle one of facial expression? buccinator. yes it is one of the muscles of facial expression
nerve innervation for the buccinator m.? buccal branch of the facial nerve(SVE-motor)
sensation of the skin & oral mucosa of cheeks is carried by which nerve? be specific buccal branch of the mandibular n. (V3)
the muscles of the floor of the oral cavity function, in order to? depress(open)mandible when hyoid is fixed and elevate/pull hyoid forward when mandible is fixed
nerve innervation to mylohyoid? nerve to mylohyoid (inf. alveolar branch of V3
nerve innervation to geniohyoid? a branch of C1
where are the submandibular and sublingual glands located? floor of the oral cavity
what is the root of the tongue attached to? to the mandible and hyoid bone
what part of the tongue constitutes the oral part of the tongue and the pharyngeal part? oral part-anterior 2/3pharyngeal part-posterior 1/3
what strucute seperates the oral and pharyngeal part of the tongue? the terminal sulcus
what covers the tongue to increase it's surface area and has taste buds? papillae of the tongue
which muscles of the tongue perform the following actions? protrude-retract-depress-elevate
what are the 4 extrinsic muscles of the tongue? palatoglossus-styloglossus-hyoglossus-genioglossus
which extrinsic tongue muscle makes up the bulk of the tongue? genioglossus
where do the genioglossus muscles originate from? mental spines of the hyoid body
nerve innnervation for the genioglossus mm.? hypoglossal nerve
where are the hyoglossus muscles in relation to the genioglossus muscles? hyoglossus mm. are immediatly lateral to genioglossus mm.
where do the hyoglossus mm originate from? greater horn of the hyoid
nerve innervation for the hyoglossus mm? hypoglossal nn.(CNXII)
where do the styloglossus mm. originate? styloid process
function and nerve innervation of the styloglossus mm? retract the tongue and innervated by (CNXII)
what are the 5 nerves that innervate the tongue? specify motor and sensort? SENSORY-mandibular(V3), facial, glossopharyngealMOTOR-hypoglossal, vagus
what seperates the oral cavity from the nasal cavity? hard palate
what structure acts as a valve that can be depressed to close the oropharyngeal isthmus? soft palate
nerve innervation for the palate? greater and lesser palatine and nasopalatine(V2)
blood supply to the palate comes from? greater palatine a.lesser palatine a.ascending palatine a.
what are the five muscles that contribute to the formation of the soft palate? tensor veli palatinilevator veli palatinipalatoglossuspalatopharyngeusmusculus uvulae
which muscles descend into the palate they both descend into the oral cavity from the skull
which muscles ascend into the palate? palatoglossus and palatopharyngeus
where does the tensor veli palatini descend from and hook into in the palate? descends from the sphenoid-hooks around the pterygoid hamulus-and than expands to form the palatine aponeurosis
what is the role of the tensor veli palatini during yawning and swallowing? T.V.P. tenses the soft palate and opens the pharyngotympanic tube
where does the levator veli palatini descend from and end up at? descends from the temporal bone-attaches to palatine aponeurosis
what is the role of the levator veli palatini? elevates the soft palate by raising the aponeurosis
where does the palatopharyngeus arise from? superior surface of the palatine aponeurosis and descends to attach to the pharyngeal wall
which nerve innervates both the palatopharyngeus and the levator veli palatini? vagus nerve-pharyngeal branch
where does the palatoglossus extend to? from the inferior surface of the palatine aponeurosis to the lateral surface of the tongue
nerve innervation for the palatoglossus? vagus-pharyngeal branch
where does the musculus uvulae run from? from posterior nasal spine to the uvula. on top of the palatine aponeurosis
nerve innervation for the musculus uvulae? vagus-pharyngeal branch
where are the palatine tonsils located? lateral wall of the oropharynx
what are the three muscles that surround the pharynx and act as constrictors? superior-middle-inferior constrictor mm.
how do the constrictor muscles move a bolus of food to the esophagus? by sequential contraction from top to bottom
nerve innervation for all 3 constrictor muscles? vagus-pharyngeal branch
what is stage 1 of swallowing? muscles of the tongue and palate push bolus to oropharynx(a voluntary action)
what is stage 2 of swallowing? soft palate elevates and seals off the nasopharynx from the oropharynx. oropharynx is opened wider and shorter(involuntary)
what is stage 3 of swallowing? sequential contraction of constrictor muscles to force bolus into esophagus.
Created by: chadlarson



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