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Head and Neck > Temporal region > Flashcards

Temporal region Flashcards

1
Q

infratemporal fossa is located:

A

deep and inferior to zygomatic arch, deep to the ramus of the mandible, and posterior to the maxilla

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2
Q

contents of the infratemporal fossa:

A

inferior part of temporalis muscle, lateral and medial pterygoids, maxillary artery, pterygoid venous plexus, mandibular, inferior alveolar, lingual, buccal, and chorda tympani nerves, and otic ganglion

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3
Q

what type of joint is TMJ?

A

modified hinge synovial

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4
Q

TMJ is formed between the:

A

mandibular condyle and the mandibular fossa and articular tubercle of temporal bone

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5
Q

lower part of TMJ allows:

A

mainly hinge-like depression and elevation

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6
Q

upper part of TMJ allows:

A

protrusion and retraction

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7
Q

lateral ligament of TMJ:

A

strengthens joint laterally

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8
Q

sphenomandibular ligament of TMJ:

A

primary passive support of the mandible

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9
Q

stylomandibular ligament of TMJ:

A

does not contribute significantly to the strength of the joint

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10
Q

temporalis attachments:

A

floor of temporal fossa to coronoid process of mandible

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11
Q

innervation of temporalis

A

mandibular nerve

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12
Q

temporalis action

A

elevation and retraction of mandible

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13
Q

masseter attachments

A

zygomatic arch to angle and lateral surface of ramus of mandible

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14
Q

innervation of masseter

A

mandibular nerve

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15
Q

action of masseter

A

elevate mandible and contribute to protrusion

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16
Q

lateral pterygoid attachments

A

superior head- inframtemporal surface of sphenoid to joint capsule and articular disc of TMJ; inferior head- lateral surface of lateral pterygoid plate to anteromedial aspect of mandibular condyle

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17
Q

lateral pterygoid innervation

A

mandibular nerve

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18
Q

lateral pterygoid action

A

bilaterally- protracts mandible and depresses chin; unilateral- swings jaw to CL side

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19
Q

medial pterygoid attachments

A

superficial head- medial surface of lateral pterygoid plate to medial surface of mandibular ramus; deep head- posterior maxilla to medial surface of mandibular ramus

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20
Q

medial pterygoid innervation

A

mandibular nerve

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21
Q

medial pterygoid action

A

elevates mandible and contributes to protrusion

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22
Q

protrusion of TMJ is caused by:

A

lateral pterygoid, assisted by medial pterygoid and superficial head of masseter

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23
Q

retraction of TMJ is caused by:

A

posterior fibers of temporalis, deep part of masseter, and geniohyoid and digastric

24
Q

elevation of TMJ is caused by:

A

temporalis, masseter, and medial pterygoid

25
Q

depression of TMJ is caused by:

A

gravity, lateral pterygoid, digastric, geniohyoid, and mylohyoid

26
Q

during yawning or taking a large bite, excessive contraction of what muscle can cause the head of the mandible to dislocate anteriorly:

A

lateral pterygoids

27
Q

larger terminal branch of ECA:

A

maxillary artery

28
Q

maxillary artery supplies blood for:

A

nasal cavity, lateral wall and roof of oral cavity, all teeth, and dura mater

29
Q

three parts of maxillary artery:

A

mandibular, pterygoid, and pterygopalatine

30
Q

mandibular/part 1 of maxillary artery:

A

middle meningeal and inferior alveolar arteries

31
Q

pterygoid/part 2 of maxillary artery:

A

deep temporal, pterygoid, masseteric, and buccal arteries

32
Q

middle meningeal artery supplies:

A

dura mater

33
Q

middle meningeal artery enters cranial cavity through the:

A

foramen spinosum

34
Q

an extradural hematoma is caused by:

A

a lateral blow to the head causing the middle meningeal artery to leak blood separating the dura from the bone

35
Q

pterygoid venous plexus is located between the:

A

temporalis and pterygoid muscles

36
Q

most veins accompanying branches of maxillary artery drain into:

A

pterygoid venous plexus

37
Q

pterygoid venous plexus anastomoses with:

A

facial vein and cavernous sinus

38
Q

mandibular nerve branches:

A

meningeal, nerve to medial pterygoid, branch to tensor tympani, and branch to tensor veli palatini

39
Q

anterior trunk of mandibular nerve:

A

buccal, masseteric, deep temporal, and nerve to lateral pterygoid

40
Q

posterior trunk of mandibular nerve:

A

auriculotemporal, lingual, and inferior alveolar nerve

41
Q

in the infratemporal fossa, branches of CN V3 are joined by:

A

branches from CN VII and IX

42
Q

chorda tympani branch of facial nerve

A

joins the lingual nerve and conveys fibers to submandibular ganglion which gives off fibers to the salivary glands

43
Q

lesser petrosal nerve of glosspharyngeal nerve

A

carries fibers to otic ganglion which then travel via auriculotemporal nerve to parotid nerve

44
Q

walls pterygopalatine fossa are formed from:

A

maxilla (anterior wall), palatine (medial wall), and sphenoid (posterior wall and roof)

45
Q

contents of pterygopalatine fossa

A

3rd part of maxillary artery and branches, accompanying veins, maxillary nerve, pterygopalatine ganglion

46
Q

3rd part of maxillary artery:

A

posterior superior alveolar, infraorbital, descending palatine, pharyngeal branch, artery of pterygoid canal, and sphenopalatine artery

47
Q

infraorbital nerve gives off what 2 nerves?

A

middle superior alveolar and anterior superior alveolar nerves

48
Q

infraorbital nerve is a branch of:

A

maxillary nerve

49
Q

maxillary nerve gives off what branches within the pterygopalatine fossa?

A

zygomatic, posterior superior alveolar, and 2 ganglionic branches

50
Q

zygomatic nerve enters orbit via:

A

IOF

51
Q

zygomatic nerve divides into:

A

zygomaticotemporal and zygomaticofacial nerves

52
Q

zygomaticotemporal nerve supplies:

A

skin over temple

53
Q

zygomaticofacial nerve supplies:

A

skin over zygomatic bone

54
Q

posterior superior alveolar nerve supplies:

A

maxillary molar teeth, buccal gingivae, and maxillary sinus

55
Q

nerve of the pterygoid canal is formed by union of:

A

greater petrosal and deep petrosal nerves

56
Q

greater petrosal nerve carries PSN fibers to:

A

all glands above oral fissure

57
Q

deep petrosal nerve carries fibers mainly to:

A

blood vessels

Head and Neck (8 decks)

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