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oral cavity - BDS 1 > dissection 2 muscles of mastication > Flashcards

dissection 2 muscles of mastication Flashcards

1
Q

actions of masseter

A

elevate the mandible

protrude

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2
Q

actions of temporalis

A

elevates mandible

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3
Q

where does temporals insete

A 
retromolar fossa
(along coronoid)
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4
Q

which mastication muscles has a greater range of contraction

A

temporals

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5
Q

what is the pterygoid venous plexus

what is it connected to

A

network of veins in infratemporal fossa

cavernous sinus and pharyngeal venous plexus

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6
Q

action of lateral pteryhoid

A

protrude mandible

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7
Q

what does the long buccal nerve supply

A

buccal mucosa

skin over buccal membrane

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8
Q

what is the long buccal a branch of

A

v3

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9
Q

what does the inferior alveolar nerve supply and branches

A

mental nerve branch
supplies chin
incisive branch for canine/incisor teeth
supplies mandibular dentition

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10
Q

what does the inferior alveolar artier supply

A

lower dentition
divides to incisive and mental
before entering mandibular foramen gives off mylohyoud branc

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11
Q

where is the major blood supply to the bone of the mandible

A 
incisor arteries (teeth and dental sockets)
branch from inferior alveolar arteries
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12
Q

bleeding from gingiva and damage to lower jaw is from

A

inferior alveolar artery

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13
Q

bleeding fromdental sockets is from

A

incisor branches

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14
Q

actions of the medial pterygoid muscel

A

elevate the mandible

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15
Q

what does the mylohyoid nerve supply

A

mylohyoid

anterior belly of digastric

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16
Q

actions of myloyoid and anterior belly of digastric

A

elevation of the hyoid bone

mylohyoid also elevates floor of mouth

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17
Q

what does the lingual nerve supply

A

general sensation to the posterior 2/3 tongue
floor of mouth
gingiva, lingual side of mandibular teeth

18
Q

what is prone to damage upon extraction of lower 8s

A

lingual nerve and IAN

19
Q

effect of damage to lingual nerve

A

lack of sensation to floor of mouth, posterior 2/3 tongue, lingual gingiva
also loss of taste as chords tympani fibres have fused

20
Q

where are IAN and lingual nerves accessible for anathesia

A

ramus of mandible

21
Q

function of the ligaments and capsule of the TMJ

A

limit movement, provide proprioception

capsule seals joint space

22
Q

what is the lateral pterygoid muscle attached to

A

articular disk

23
Q

function of the articular disk

A

pack the joint to provide stability

24
Q

what is the TMJ disk made of

A

fibrocartilage

25
Q

what are the other ligaments of the TMJ

A

stylomandibular

sphenomandibualr

26
Q

what foramen is the lingual nerve related to

A

mandibular formament

27
Q

effect of calcified sphenomandubular ligament on inferior alveolar block

A

prevents analeptic diffusing

28
Q

branches of the maxillary artery

A

middle meningeal artery
inferior alveolar artery
superior alveolar arteries

29
Q

effect of IAN damage

A

loss of sensation to lower teeth

lip and chin (mental)

30
Q

muscles that arise from the styloid process

A

styloglossus
stylopharyngeus
stylohyoid

31
Q

nerve supply to stylohyoid

A

facial nerve

32
Q

nerve supply to styloglossus

A

hypglossal

33
Q

nerve supply to stylopharyngeis

A

glossopharyngeal

34
Q

supra hyoid muscels

A

digastric
stylohyoid
geniohyoid
mylohyoid

35
Q

where can the zygomatic arch move if fractured

A

inferior displacement due to master

36
Q

most common sites for mandubalr fractures

A

body at the level of canine teeth
junctional body and ramus
condylar neck

37
Q

what prevents the TMJ dislocating laterally

A

lateral ligamentn

38
Q

what prevents the TMJ disolating medially

A

bone

39
Q

what prevents the TMJ dislocating posteiroally

A

bone

40
Q

which way is theTMJ most likely to dislocate

A

anteriorly

41
Q

why is it important to use an aspirating syringe when doing an IAN block

A

check you are not injecting into a blood vessle

42
Q

checking for nerves that may have been damaged on extraction of lower 8s

A

lingual - touch test

chords tympani - taste test

oral cavity - BDS 1 (66 decks)

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