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DPT Anatomy Test 3 > Head > Flashcards

Head Flashcards

1
Q

mastication mm formed embryologically, innervation?

A

1st branchial arch/ madibular division(V3) of the trigeminal n.

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2
Q

What doe muscles of facial expression develop from. innervation?

A

2nd branchial arch/ facial n

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3
Q

insertions - anterior, lateral, neck, medial surface of ramus of mandible

A

temporalis, masseter, lateral pterygoid, medial pterygoid

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4
Q

boundaries of temporal fossa

A

temporal lines
frontal bone
zygomatic bone

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5
Q

what is the area of articulation? what artery crosses it

A

pterion
middle meningeal a
at risk as a result of lateral head injuries

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6
Q

contents of temporal fossa

A

temporalis m

running over the top of m is-superficial temporal artery and auriculotemporal n.

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7
Q

Where does the auricolotemporal n (branch of V3) originate and emerge

A

infratemporal fossa

anterior to auricle and deep to parotid gland

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8
Q

Where is infratemporal fossa located

A

inferior and deep to the dzyomatic arch and posterior to the maxilla

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9
Q

borders of the infratemporal fossa

A

lateral-ramus of mandible
medial - latral pterygoid plate
anterior-infratemporal surface of maxilla
posterior - condylar process of mandible and styloid process of temporal bone
roof- inferior surface of greater wing of sphenoid bone
floor- level where medial pterygoid m attaches to the angle/ramus of mandible

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10
Q

What are the foraminae located in the infratemporal fossa? what emerges from them?

A

f. ovale- mandibular division of trigeminal n

f. spinosum - middle meningeal artery

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11
Q

mandibular n branches into what named nn

A 
auriculotemporal
inferior alveolar
lingual
buccal
named muscular branches for each muscle of mastication
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12
Q

auriculotemporal n

A

sensor to around the ear. carries glossopharyngeal fibers to the parotid, production of saliva

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13
Q

sensory to the teeth of the mandible and skin overlying the chin and mandible

A

inferior alveolar n

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14
Q

somatosensation to the anterior 2/3 of the tongue

A

lingual n

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15
Q

a branch of the facial n. that joins lingual n to carry taste sensation from the ant 2/3 of the tongue

A

chorda tympani

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16
Q

sensation over the cheek

A

buccal n

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17
Q

what is a terminal branch of the external carotid that is seen in the infratemporal fossa

A

maxillary a

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18
Q

what are the branches of the maxillary a (described with respect to their position to the lateral pterygoid m)

A

middle meningeal a

inferior alveolar a.

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19
Q

Where does the pterygopalatine fossa lie?

A

between sphenoid bond posteriorly and maxilla anteriorly

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20
Q

What foramina does the pterygopalatine fossa contain

A

f rotundum

inferior orbital fissure

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21
Q

What nerves does the pterygopalatine fossa contain

A

maxillary division of (V2) branches into infraorbital n. carrying sensation from the skin overlying the maxillary and zygomatic regions

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22
Q

What vessels does the pterygopalatine fossa containe?

A

maxillary artery branches

infraorbital a.

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23
Q

What kind of joint is the temporomandibular jt

A

modified synovial hinge jt.

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24
Q

What articulates at the tmj

A

head of condyle of the mandible and the mandibular fossa with the articular tubercle
there is a articular disc within the joint that is fused with the articular capusle

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25
Q

what is the strong ligament of the tmj capsule

A

the articular capsule is thickened laterally as the lateral temporomandibular ligament

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26
Q

Which other two ligaments support the connection of the mandible to the base of the skull

A

stylomandibular

sphenomandibular

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27
Q

what movements occur at the tmj

A

rotation during initial part of jaw opening, the head of the mandible rotates with the articular disc toward the articular tubercle

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28
Q

Where do the muscles of facial expression insert

A

skin or fascia underlying skin

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29
Q

innervation of facial expression muscles

A

facial n CN VII

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30
Q

what are the 6 muscles of facial expression

A 
platysma
orbiuclaris oris
buccinator
orbicularis oculi
nasails muscle
frontalis muscle
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31
Q

innervation of platysma

A

cervical and mandibular branch of facial n

32
Q

innervation of orbicularis oris

A

buccal and mandibular branches of facial n

33
Q

innervation of buccinator

A

buccal branch of facial n

34
Q

innervation of orbicularis oculi

A

zygomatic and temporal branches of facial n.

35
Q

innervation of nasalis muscle

A

zygomatic branch of facial n

36
Q

innervation of frontalis m

A

temporal branch of facial n

37
Q

occipitalis m. innervation

A

posterior auricular branch of facial n.

38
Q

smile muscle

A

zygomaticus major

39
Q

sneer muscle

A

zygomaticus minor, along with the levators

40
Q

kirk douglas muscle (dimple in middle of chin)

A

mentalis

41
Q

grin muscle

A

risorius

42
Q

this muscle is necessary for firmness on the lateral side of the oral cavity

A

buccinator

43
Q

orbicularis oculi parts

A

orbital part - sphincter
palbebral part - eyelid
lacrimal part - medial extension of eyelid over lacrimal puncta, necessary for bathing eye with tears.

44
Q

origin on the maxilla and inserts near the alar cartilage of the nose

A

nasalis muscle

45
Q

two parts of nasalis muscle

A

compressor and dilator part

46
Q

continuous with the occipitalis m on the posterior part of the skull as occipitofrontalis m.

A

frontalis m

47
Q

occipitalis and frontalis are connected by the

A

epicranial aponeurosis

48
Q

sensor component for all sensation over the face, including proprioception of the muscles of facial expression

A

trigeminal n.

49
Q

3 divisions of trigeminal n.

A

V1 ophthalmic
V2 maxillary
V3 mandibular (only division with motor component)

50
Q

what innervates the muscles of mastication

A

motor component of V3

51
Q

V1 leaves the middle cranial fossa via

A

the superior orbital fissure

52
Q

V2 leaves the middle cranial fossa via the

A

foramen rotundum

53
Q

V3 leaves the middle cranial fossa via the

A

foramen ovale

54
Q

The ______ nerve is sensory only and thus does not innervate the buccinator muscle (a muscle of facial expression and is innervated by the buccal branch of the facial n)

A

buccal

55
Q

Branches of V1

A

supraorbital, supratrochlear, infratrochlear, external nasal, lacrimal

56
Q

Branches of V2

A

infraorbital, zygomaticofacial, zygomaticotemporal, superior alveolar

57
Q

Branches of V3

A

auriculotemporal, buccal, mental, inferior alveolar, lingual

58
Q

all the muscles of facial expression are innervated by

A

facial n

59
Q

the facial n. emerges from _______ through the __________ and then branches after they pass through the _________

A

base of the skull
stylomastoid foramen
parotid gland

60
Q

Which branch of the facial n branches posteriorly

A

posterior auricular

61
Q

6 branches of facial n

A 
posterior auricular
cervical
mandibular
buccal
zygomatic
temporal
62
Q

arteries of the face are branches off

A

the external carotid

63
Q

The branches of the external carotid in ascending order

A 
superior thyroid - neck
ascending pharyngeal - neck
lingual
facial
occipital
posterior auricular
superficial temporal
maxillary -final branch, seen in the infratemporal fossa
64
Q

middle meningeal, inferior alveolar and infraorbital are branches off

A

maxillary artery, which branches off external carotid

65
Q

what vein drains the majority of the face

A

internal jugular vein

66
Q

which vein drains into both external jugular and facial

A

retromandibular

67
Q

veins around the nose are continuous with veins in the orbit that drain into

A

the cranial cavity

this is a source of infections to the meninges and brain

68
Q

where does the parotid gland lie

A

in the parotid bed wedged between the ear and the posterior edge of the ramus of the mandible

69
Q

where is the parotid duct located

A

below the zygomatic arch and empties into the oral cavity adjacent to the upper second molar

70
Q

T/F Facial N fibers travel through the body of the gland and innervate it

A

F. they do travel through it, but it is innervated by the glossopharyngeal n (CN IX) and the carotid plexus

71
Q

what nerve is responsible for autonomic and parasympathetic innervation of the parotid gland

A

glossopharyngeal n CN IX

72
Q

what is responsible for production of thick saliva (sympathetic activation) of the parotid gland

A

carotid plexus

73
Q

what carries the glossopharyngeal innervation to the parotid gland

A

auriculotemporal n. V3

74
Q

TF auriculotemporal n does not carry sensor fibers into the parotid gland

A

t

75
Q

What are the 4 muscles of mastication

A

temporalis, masseter, lateral pterygoid, medial pterygoid

DPT Anatomy Test 3 (4 decks)

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