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Anatomy 2 Unit 2 > 5 - Parotid & Temporal & TMJ > Flashcards

5 - Parotid & Temporal & TMJ Flashcards

1
Q

Parotid gland is just inferior to

A

ext. acoustic meatus

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2
Q

Swelling of parotid gland will

A

push ear superolateral

Mumps

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3
Q

Retromandibular Vein formed by

A

superficial temporal & maxillary vv.

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4
Q

Retromandibular vein Enters parotid

A

posterior to ramus of mandible

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5
Q

Retromandibular vein Splits into

A

2 divisions that drain into the EJV & IJV

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6
Q

Distal portion of External Carotid Artery lies deep

A

within parotid gland

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7
Q

ECA Parallels

A

retromandibular v. just deep to it

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8
Q

ECA splits into 2 branches:

A

Post. to mandibular neck, splits to 2 terminal branches
Superficial temporal a
Maxillary a

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9
Q

The parotid gland wraps around the posterior aspect of the

A

mandibular ramus

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10
Q

Facial n., external carotid a., and retromandibular v. within the

A

parotid gland

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11
Q

Deep to the parotid bed =

A

carotid sheath, containing internal carotid artery, internal jugular vein, and the vagus nerve.

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12
Q

Facial Nerve (CN VII) exits

A

cranium via stylomastoid foramen

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13
Q

Facial Nerve (CN VII) forms

A

parotid plexus within gland

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14
Q

CN VII Branches emerge &

A

fan out over lateral aspect of face

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15
Q

CN VII Leaves the brainstem and enters the Internal acoustic meatus and

A

travels through the temporal bone. Its sensory ganglion = the geniculate ganglion, lies within the temporal bone.

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16
Q

Contents of Temporal Fossa

A

temporal fat pad
Temporalis m
Masseter m
Neurovasculature

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17
Q

Temporalis m.

A

covered by thick temporal fascia

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18
Q

Masseter m

A

works with temporalis m. to elevate mandible (*Not content of Temporal fossa)

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19
Q

Masseter innervation

A

masseteric br. of CN V3

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20
Q

Temporal fat pad:

A

Enclosed in temporal fascia & fills out temple region

Between temporalis m. & lat. wall of orbit

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21
Q

Trigeminal N. Mandibular division (CN V3) nerves

A

Auriculotemporal Nerve

Ant. & Post. Deep Temporal nn

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22
Q

Auriculotemporal Nerve travels with

A

with Superficial temporal a & v

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23
Q

Auricotemporal nerve Runs deep to

A

parotid gland & post. to TMJ

Between the auricle & condyle of mandible

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24
Q

Auricotemporal nerve Provides sensory innervation to

A

to TMJ & lat. scalp

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25
Q

Auricotemporal nerve Carries

A

p-symp. fibers from CN IX into parotid gland

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26
Q

Ant. & Post. Deep Temporal nn. Passes

A

sup. to lat. Pterygoid m. & deep to temporalis m.

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27
Q

Infratemporal Fossa borders

A 
Lateral – Ramus of mandible
Medial – Lateral pterygoid plate
Anterior – Maxilla
Posterior – Tympanic plate, 
mastoid & styloid processes
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28
Q

Infratemporal fossa roof

A

Inferior surface of the Greater wing of the Sphenoid; Temporal bone
Foramen Ovale
Foramen Spinosum

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29
Q

Infratemporal Fossa Contents - muscles

A

temporalis, medial & lateral pterygoids mm

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30
Q

Infratemporal fossa contents A & V

A

Maxillary & brs; Pterygoid plexus of veins

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31
Q

Infratemporal fossa Nerves

A 
Mandibular division of CN V (V3)
Posterior superior alveolar n. (V2)
Chorda tympani n. br of CN VII (Facial)
Otic ganglion
Lesser Petrosal n.
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32
Q

Remember the lateral border of the infratemporal fossa is the

A

mandibular ramus and its coronoid process

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33
Q

Remember also that the Temporalis m. is continuous

A

inferiorly from the temporal fossa into the infratemporal fossa

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34
Q

Medial Pterygoid m.

A

elevates, protrudes & rotates mandible

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35
Q

Lateral Pterygoid m.

A

opens, protrudes and rotates mandible

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36
Q

Trigeminal N (CN V): Mandibular V3 - has large

A

Large sensory root & small motor root

37
Q

CN V Mandibular V3 Large sensory small motor roots Unite after passing through

A

foramen ovale to enter infratemporal fossa

38
Q

CN V Mandibular V3 branches:

A

Meningeal branch n (immediately)

39
Q

CN V Mandibular V3 muscles

A

Medial pterygoid, tensor tympani & tensor veli palatini nn

40
Q

CN V Mandibular V3 Divides into Anterior & Posterior divisions

A

Ant. : small, mainly motor
1 sensory branch (Buccal n)
Post. : larger, mainly sensory
1 motor branch (mylohyoid n

41
Q

CN V Mandibular V3 all branches***

A 
Auriculotemporal N.
Masseteric & Deep temporal (A & P) Nn.
Med. & Lat. Pterygoid Nn.
Buccal N. 
Inferior Alveolar & Lingual Nn.
Meningeal branches
42
Q

Auriculotemporal N. CNV Mand V3

A

sensory

43
Q

Masseteric & Deep temporal (A & P) Nn. CN V mand V3

A

motor

44
Q

Med. & Lat. Pterygoid Nn. CN V Mand V3

A

motor

45
Q

Buccal N. CNV Mand V3

A

sensory

46
Q

Inferior Alveolar & Lingual Nn. CNV Mand V3

A

Sensory

47
Q

Meningeal branches CNV Mand V3

A

sensory

48
Q

CNV Mand V3 Nerves of Mastication

A

Masseteric N
Deep temporal Nn
Med. & Lat. Pterygoid Nn.

49
Q

Masseteric N.

A

runs with masseteric A.

Supply masseter m. (thru mand. Notch)

50
Q

Deep temporal Nn

A

run with deep temporal Aa.

Supply temporalis m (passes deep to it)

51
Q

Med. & Lat. Pterygoid Nn.

A

run with pterygoid Aa.

Supply med. & lat. Mm.

52
Q

Buccal N.

A

Runs with Buccal A.

Brs. Pierce Buccinator M.

53
Q

Buccan N. supplies

A

Supply sensory fibers to Buccal mucosa & skin of cheek

54
Q

Lingual Nerve emerges

A

below lateral pterygoid m.

Just anterior to inferior alveolar n.

55
Q

Lingual nerve travels in

A

inferior surface of tongue to supply it

56
Q

Lingual nerve provides

A

Sensory to anterior 2/3 of tongue

57
Q

Chorda Tympani N. (CN VII)

A

Special sensory br. Of CN VII

58
Q

Chorda tympani n CNVII Joins

A

Lingual N. posteriorly

59
Q

Chorda tympani n CNVII supplies

A

p-symp. innervation to lower 2 salivary glands

60
Q

Chorda tympani n CNVII Also carries

A

taste fibers from anterior 2/3 tongue

61
Q

Temporomandibular Joint (TMJ) formed by portions of

A

temporal bone & mandible

62
Q

TMJ is a Modified

A

hinge type synovial joint

63
Q

TMJ has a Relatively lax

A

articular capsule surrounding joint

64
Q

TMJ Thickened laterally to form

A

lat. Temporomandibular ligament

65
Q

TMJ Contains

A

articular disc between temporal bone & mandible

66
Q

TMJ Movements include

A

hinge & gliding actions

67
Q

TMJ info

A 
Hinge type (ginglymus) synovial joint with 2 synovial cavities separated by oval, 
biconcave, fibrocartilaginous (may be purely fibrous) intra-articular disc; disc is attached 
circumferentially to joint capsule and is also attached, in front, to superior head of lateral 
pterygoid muscle, to ensure forward movement of disc with protrusion of condyle
68
Q

TMJ Anteriorly, articular surface of mandibular fossa is covered by

A

fibrocartilage and continues

onto articular tubercle; thus, tubercle lies within capsule

69
Q

Specifics of the Articular Disc surface:

A

Concavoconvex superior surface
Concave inferior surface
Increases in thickness toward periphery

70
Q

Concavoconvex superior surface

TMJ articular disc - it is to fit

A

to fit articular tubercle & mandibular fossa

71
Q

Concave inferior surface TMJ articular disc

A

to fit around mandibular condyle

72
Q

Increases in thickness toward periphery

TMJ articular disc

A

where it attaches to articular capsule

73
Q

Accessory Ligaments of TMJ

A

Stylomandibular ligament

Sphenomandibular ligament

74
Q

Stylomandibular ligament

A

From styloid process to posterior border of mandibular ramus

75
Q

Sphenomandibular ligament

A

from spine of sphenoid bone to lingula of mandible

76
Q

Stylomandibular lig Separates

A

parotid & submandibular glands

77
Q

Sphenomandibular lig separated from

A

capsule by maxillary a. & auriculotemporal n.

78
Q

Any swelling in parotid gland can effect

A

facial nerve

79
Q

Posterior division of retro drains into

A

EJV

80
Q

Parotid bed

A

scm, masseter, parotid, Medial pterygoid, posterior belly of digastric, spinohyoid.

81
Q

Muscles of facial expression derived from pharyngeal arch #

A

3

82
Q

Hypoglossal n

A

comes around lateral to occipital a. branch

83
Q

Infratemporal fossa space involved in a lot of

A

infections

84
Q

Head and neck veins are

A

valveless - in cases of extreme inflammation, this can allow for blood to return by another pathway. Pterygoid plexus has anastamoses to damn near everything.

85
Q

General sensation anterior 2/3rds is

A

Mandibular V3 (trigeminal)

86
Q

TMJ cartilage connected to

A

lateral pterygoid, everytime it contracts, it forces the cartilage to move.

87
Q

retrodistal zone

A

back part of articular disc. Has venous plexus, very complex properties.

88
Q

auriculotemporal nerve splits around (both sides) of

A

middle meningeal a.

Anatomy 2 Unit 2 (15 decks)

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