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Anatomy > G51: Temporal region > Flashcards

G51: Temporal region Flashcards

1
Q

Mylohyoid line

A

medial side of the body of the mandible, insertion of mylohyoid m.

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2
Q

TMJ

A

Condylar process of mandible in the articular fossa/glenoid fossa

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3
Q

Mandibular notch

A

lies between coronoid and condylar process

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4
Q

Mandibular foramen

A

medial aspect of ramus of mandible; passage of inferior alveolar nerve and vessels

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5
Q

Lingula

A

bony projection that extends the area of the mandibular foramen; where the sphenomandibular ligament attaches

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6
Q

Sphenomandibular ligament

A

flat, thin band which is attached superiorly to the sphenoid spine, and becomes broader as it descends, is fixed to the lingula of the mandibular foramen, prevents over depression of mandible

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7
Q

Temporalis origin

A

temporal fascia, temporal fossa, and inferior temporal line

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8
Q

Temporalis insertion

A

coronoid process and anterior margin of ramus

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9
Q

Temporalis innervation

A

Deep temporal n. (CN V3)

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10
Q

Temporalis action

A

vertical fibers elevate the mandible, horizontal fibers retract the mandible

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11
Q

Masseter origin

A

zygomatic arch

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12
Q

Masseter insertion

A

superficial head- lateral mandibular angle and deep head - lateral mandibular ramus

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13
Q

Masseter innervation

A

masseteric branch of CN 5-3

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14
Q

Masseter action

A

elevate mandible, protraction

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15
Q

Medial and lateral pterygoid muscles

A

major muscles of mastication

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16
Q

Temporal fossa

A

zygomatic arch to inferior temporal line, occupied by temporalis

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17
Q

Vessels of temporal region

A

superficial temporal a./v. and auriculotemporal n.

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18
Q

Roof of temporal fossa

A

temporal fascia

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19
Q

Floor of temporal fossa

A

squamous temporal bone, greater wing of sphenoid, parietal, frontal

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20
Q

anterior wall of temporal fossa

A

zygomatic bone

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21
Q

Superior temporal line

A

attachment of temporal fascia

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22
Q

infratemporal crest

A

boundary between infratemporal fossa and temporal fossa

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23
Q

Infratemporal fossa

A

inferior to the temporal fossa and deep to the ramus of the mandible

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24
Q

Lateral boundary of infratemporal fossa

A

ramus of mandible

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25
Q

Anterior boundary of infratemporal fossa

A

body of maxilla

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26
Q

Medial boundary of infratemporal fossa

A

contains pterygomaxillary fissure; lateral pterygoid plate of sphenoid, superior pharyngeal constrictor, tensor veli palatini, levator veli palatini

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27
Q

Roof of infratemporal fossa

A

greater wing of sphenoid and squamous temporal

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28
Q

What foramen open from the middle cranial fossa to the infratemporal fossa

A

foramen ovale and foramen spinosum

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29
Q

Contents of infratemporal fossa

A

medial and lateral pterygoid mm., maxillary a, pterygoid plexus, mandibular div of CN 5-3

30
Q

Lateral pterygoid m. origin

A

superior head - infratemporal crest and inferior head - lateral pterygoid plate

31
Q

Lateral pterygoid m. insertion

A

capsule of TMJ and neck of mandible

32
Q

Lateral pterygoid m. innervation

A

Lateral pterygoid branch of CN 5-3

33
Q

Lateral pterygoid m. action

A

protracts and laterally deviates mandible

34
Q

Medial pterygoid m. origin

A

medial side of lateral pterygoid plate

35
Q

Medial pterygoid m. insertion

A

mandibular ramus and angle

36
Q

Medial pterygoid m. innervation

A

Medial pterygoid branch of CN 5-3

37
Q

Medial pterygoid m. action

A

elevates protracts and laterally deviates jaw

38
Q

External carotid terminal branches

A

maxillary a and the superficial temporal a

39
Q

Maxillary a

A

enters infratemporal fossa via parotid gland deep to the ramus of mandible exits via the pterygomaxillary fissure

40
Q

1st part of maxillary a branches

A

deep auricular (posterior to ear), anterior tympanic, middle meningeal (dives into foramen spinosum), inferior alveolar (dives inferior to mandibular foramen), mental (continuation of inferior alveolar), accessory meningeal

41
Q

2nd part of maxillary a branches

A

deep temporal (to temporalis), pterygoid (to medial and lateral pterygoids), buccal (to buccinator), masseteric (to masseter)

42
Q

3rd part of maxillary a branches

A

posterior superior alveolar (into body of maxilla), infraorbital (inferior orbital fissure); enters pterygopalatine fissure sphenopalatine and descending palatine a

43
Q

pterygoid plexus

A

venae comitantes lying on maxillary a

44
Q

pterygoid veins may spread infection to interior of cranium bc

A

they are valveless and have connections to the cavernous sinus

45
Q

Mandibular div of CN 5

A

Sensory and motor, foramen ovale, parasympathetic otic ganglion (lesser petrosal -> auriculotemporal n.)

46
Q

Auriculotemporal n.

A

sensory to auricle, parotid gland, and temporal region; postganglion from otic to parotid gland
Surrounds middle meningeal a.

47
Q

Inferior alveolar n.

A

enter the mandibular foramen- sensory to teeth, mandible, and lower lip gives mental n. to provide sensory to chin

48
Q

nerve to mylohyoid

A

innervates ant belly of digastric and mylohyoid

49
Q

Lingual n.

A

deep to ramus, sensory to anterior 2/3 of mouth and and floor of mouth; chorda tympani joins carrying SPECIAL sensory taste to anterior 2/3 tongue and parasympathetic fibers to submandibular gland, postganglionic parasympathetic rejoin lingual to innervate sublingual gland

50
Q

Buccal n.

A

descends along superficial surface of buccinator; Sensory to cheek

51
Q

meningeal branch

A

runs with the middle meningeal a.; sensory to dura

52
Q

TMJ

A

synovial joint between condylar process of mandible and glenoid fossa

53
Q

Intra-articular disc

A

thick post. and ant. band of fibrocartilage with thin central portion; dividing joint into superior and inferior compartments

54
Q

superior compartment of TMJ

A

permits gliding movement (glenoid fossa to articular eminence)

55
Q

inferior compartment of TMJ

A

permits hinge movement

56
Q

Lateral pterygoid m. is responsible for

A

gliding movement of superior compartment (superior head of lateral pterygoid)

57
Q

Lateral ligament (temperomandibular ligament)

A

zygomatic tubercle to mandibular neck; short thickening of fibrous capsule

58
Q

Sphenomandibular ligament

A

sphenoid spine to the lingula of mandible

59
Q

Stylomandibular ligament

A

styloid process to medial portion of mandibular angle

60
Q

Full opening of the mouth requires

A

gliding movement of superior compartment, mandible slides forward onto the articular eminence (superior head of pterygoid, superior compartment)

61
Q

joint dislocation

A

excessive opening; condyle slips anterior to articular eminence and becomes jammed upward

62
Q

lateral deviation of jaw

A

the contralateral side slides anteriorly while the lateral deviating condyle pivots

63
Q

Maxillary artery branches are divided into three parts based on what?

A

position relative to the lateral pterygoid m.

64
Q

otic ganglion

A

attached to the deep side of the at level of foramen ovale

65
Q

Pain or clicking of the TMJ may be a result of

A

a torn or degenerated articular disc

66
Q

hinge movements of the jaw take place in what compartment

A

inferior compartment of the joint capsule

67
Q

Pivoting about the vertical axis of the TMJ joint involves which compartment

A

superior compartment of joint capsule

68
Q

The sphenomandibular ligament inserts onto what feature of the mandible?

A

lingula

69
Q

The middle meningeal artery passes through which of the following?

A

foramen spinosum

70
Q

Preganglionic parasympathetic nerve fibers that synapse on the submandibular ganglion are carried by which of the following nerves?

A

lingual n.

Anatomy (14 decks)

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