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GRDA > muscles of mastication > Flashcards

muscles of mastication Flashcards

1
Q

muscles of mastication innervation

A

mandibular nerve (V3)

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2
Q

elevates and retracts mandible

A

temporalis and masseter

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3
Q

temporalis originates at ___ and inserts on ____

A

temporal fossa
coronoid process of mandible

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4
Q

masseter originates at ____ specifically the ___ of zygomatic bone and inserts on ____

A

zygomatic arch
maxillary process
angle and lateral surface of mandible

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5
Q

triangular 2 headed muscle

A

lateral pterygoid

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6
Q

1 head of lateral pterygoid originates from ___ and the other head originates from ____ both insert on ____

A

base of skull
lateral surface of lateral pterygoid plate
joint capsule and articular disc of TMJ and condyloid process of mandible

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7
Q

bilateral: protrude mandible and initiates jaw opening

A

lateral pterygoid

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8
Q

unilateral: lateral mandible movements

A

lateral and medial pterygoid

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9
Q

quadrangular two headed muscle

A

medial pterygoid

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10
Q

1 head of medial pterygoid originates from ___ and the other head originates from ____ both heads insert on ____

A

medial surface of lateral pterygoid plate
maxilla
medial surface of ramus of mandible

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11
Q

mirror image of masseter

A

medial pterygoid

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12
Q

bilateral: elevate and protrudes mandible

A

medial pterygoid

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13
Q

depression of mandible involves ___ and ___ and ___ when resistance is involved

A

gravity
suprahyoid
infrahyoid

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14
Q

elevation of mandible involves ___, ___, and ___

A

temporalis
masseter
medial pterygoid

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15
Q

retraction of mandible involves ____ and ____

A

posterior fibers of temporalis
masseter

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16
Q

protrusion of mandible involves ___ assisted by ___, and minor assistance by ____

A

lateral pterygoid
medial pterygoid
masseter

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17
Q

lateral movements (grinding and chewing) of mandible involves ____ and ____ of same side and ___ of opposite side

A

temporalis
masseter
pterygoids

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18
Q

dislocation of TMJ results from the heads of the mandibles dislocating ____ meaning they pass anterior to ____

A

anteriorly
articular tubercles

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19
Q

largest branch of external carotid artery in the neck and is a major source of blood supply for the nasal cavity, lateral walls and roof of oral cavity, all teeth and the dura mater in the cranial cavity

A

maxillary artery

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20
Q

1st part of maxillary artery gives rise to the ____ and ____ arteries

A

middle meningeal
inferior alveolar

21
Q

2nd part of maxillary artery gives origin to ____, ___, ___, and ____ which course with branches of mandibular nerve

A

deep temporal
masseteric
buccal
pterygoid branches

22
Q

3rd part of maxillary artery enters the ____ and gives rise to ___ and ___ arteries

A

pterygopalatine fossa
posterior superior alveolar
infra-orbital

23
Q

occupies most of the IT fossa

A

pterygoid venous plexus

24
Q

pterygoid venous plexus is located partly between the ___ and ___ muscles

A

temporalis
pterygoid

25
Q

the pterygoid venous plexus drains anterior to the ___ vein via the ____ vein but mainly drains posteriorly via the ___ and then ___ veins

A

facial
deep facial
maxillary
retromandibular

26
Q

the mandibular nerve arises from the trigeminal ganglion in the ____

A

middle cranial fossa

27
Q

the mandibular nerve provides ___ and ___ functions

A

sensory
motor

28
Q

the mandibular nerve descends through the ___ into the IT fossa

A

foramen ovale

29
Q

the branches of CN V3

A

deep temporal (motor)
masseteric (motor)
buccal (sensory)
auriculotemporal
inferior alveolar
lingual
meningeal
nerve to tensor tympani

30
Q

also present in IT fossa and is located near the mandibular nerve but is connected functionally to CN IX

A

otic ganglion

31
Q

pass superiorly to enter the temporal fossa deep to the temporalis muscle to supply it

A

deep temporal nerve (motor)

32
Q

pass laterally over the margin of the mandibular notch to enter the deep surface of the masseter muscle

A

masseteric nerve (motor)

33
Q

passes posteriorly to the beck of the mandible and supplies sensory fibers to auricle and temporal region and TMJ

A

auriculotemporal nerve

34
Q

the auriculotemporal nerve may encircle the ____

A

middle meningeal artery

35
Q

the auriculotemporal nerve conveys ____ fibers from otic ganglion to the parotid gland

A

postsynaptic parasympathetic secretomotor

36
Q

enters the mandibular foramen and passes through the mandibular canal

A

inferior alveolar nerve

37
Q

inferior alveolar nerve supplies ____

A

all mandibular teeth on its side

38
Q

inferior alveolar gives small branch ____ that innervate mylohyoid and anterior belly of digastric

A

nerve to mylohyoid

39
Q

terminal branch of mandibular nerve is the ___ and supplies the skin and mucous membrane of the lower lip and skin of the chin

A

mental nerve

40
Q

lies anterior to the inferior alveolar nerve and passes anteriorly under cover of the oral mucosa, medial and inferior to the 3rd molar tooth that provides sensory to the anterior 2/3 of the tongue, the floor of the mouth and the lingual gingivae

A

lingual nerve

41
Q

the ___ joins the lingula nerve in the IT fossa

A

chorda tympani n.

42
Q

chorda tympani carries taste fibers from ____

A

anterior 2/3 of tongue

43
Q

chorda tympani carries ____ for submandibular and sublingual salivary glands

A

preganglionic parasympathetic fibers

44
Q

the dura on the floors of the anterior and middle cranial fossa and the roof of the posterior cranial fossa are innervated by ____ arising directly or indirectly from the trigeminal nerve

A

meningeal branches

45
Q

all divisions of CN V supply ____

A

sensation to dura

46
Q

anterior cranial fossa

A

all 3 divisions of CN V

47
Q

middle cranial fossa

A

mostly V3

48
Q

the meningeal branch of V3 ascends to leave the IT fossa with ___ and reenter the cranial cavity through the ____

A

middle meningeal artery
foramen spinosum

49
Q

also supplies the mastoid cells that communicate with the middle ear

A

meningeal nerve

GRDA (13 decks)

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