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MSK TEST 1 > Week 4 > Flashcards

Week 4 Flashcards

1
Q

SCALP

A

Skin, dense CT, Aponeorosis, Loose CT, Pericranium

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2
Q

Epicranial aponeurosis

A

the big strip of white tissue that connects the bellies of the occipitofrontalis muscle

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3
Q

how many bellies does the occipitofrontalis muscle have?

A

2

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4
Q

what is the origin of the occipitofrontalis muscle?

A

galea aponeurotica layer of skull

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5
Q

what is the insertion of the occipitofrontalis muscle

A

frontalis: skin over the eyebrows
occipitalis: superior nuchal line

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6
Q

what are the actions of the occipitofrontalis muscle

A

frontalis: raises eyebrows
occipitalis: anchors and retracts the galea posteriorly

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7
Q

what is the innervation of the occipitofrontalis muscle?

A

CNVII (facial nerve)

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8
Q

Orbicularis Oculi

A

a sphincter muscle arranged in concentric bands around the upper and lower eyelids
main function: close the eyelids when muscle contracts

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9
Q

Levator palpebrae superiororis

A

triangular-shaped muscle located in each upper eyelid
main function: elevate and retract the upper eyelid

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10
Q

what innervates levator palpebrae superioris

A

CN III (oculomotor nerve)

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11
Q

functions of muscles of the ears

A

in animals helps to direct the ears towards the sources of sounds

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12
Q

what are the elevators, retractors and evertors of the upper lip

A
  • levator labii superioris
  • zygomaticus major and minor
  • risoris
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13
Q

Orbicularis oris

A

the sphincter around the mouth, closes and protrudes lips (kissing)

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14
Q

Buccinator

A

in the cheek
- presses cheeks against teeth and lips
- resists distension of the mouth

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15
Q

what are the muscles of mastication (chewing)

A
  • temporalis
  • masseter
  • medial pterygoid
  • lateral pterygoid
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16
Q

Temporalis

A

O: temporal fossa and fascia
I: coronoid process and anterior border of ramus of mandible
Innervation: Mandibular nerve (V3)
Function: elevation and retraction of mandible

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17
Q

masseter

A

O: zygomatic arch
I: lateral surface of ramus of mandible
innervation: mandibular nerve (V3)
function: elevation and protraction of mandible

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18
Q

medial pterygoid

A

O: mainly pterygoid process of sphenoid bone
I: medial surface of angle of mandible
Innervation: Mandibular nerve (V3)
function: elevation, protrusion, and contralateral deviation of mandible

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19
Q

lateral pterygoid

A

O: mainly pterygoid process of sphenoid bone
I: articular disc and to the neck of the mandible
Innervation: mandibular nerve (V3)
Function: protrusion and contralateral deviation of mandible

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20
Q

Another name for neurocranium?

A

brain box

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21
Q

another name for viscerocranium?

A

facial skeleton

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22
Q

what are the paired neurocranium bones?

A

parietal and temporal bones

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23
Q

what are the unpaired neurocranium bones?

A

frontal, occipital, sphenoid, ethomoid bones

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24
Q

what are the paired viscerocranium bones

A

lacrimal, nasal, zygomatic, maxilla, inferior nasal concha, palatine bones

25
what are the unpaired viscerocranium bones?
mandible and vomer
26
what bone is at the back of the head?
occipital bone
27
what suture divides the two parietal bones at the top of the skull?
sagittal suture
28
what suture divides the parietal bones to the occipital?
lambdoid suture
29
what suture divide the frontal bone and the parietal?
coronal suture
30
what is the point at which the coronal suture and sagittal suture meet?
bregma
31
what is on the roof of the mouth?
incisive fossa
32
what are the 3 different regions of the bones of cranial base?
anterior, middle, and posterior cranial fossa
33
what are the anterior cranial fossa?
ethmoid bone, including crista galli and cribriform plate
34
what are the middle cranial fossa?
the sphenoid bone, including sella turcica, hypophyseal fossa, dorsum sellae the temporal bone including the groove for superior petrosal sinus
35
what are the posterior cranial fossa?
temporal bone with the groove for sigmoid sinus and occipital bone with groove for transverse sinus
36
what is CN1?
olfactory
37
what is CN2?
optic
38
what is CN3?
oculomotor
39
what is CN4?
trochlear
40
what is CN5?
trigeminal
41
what is CN6?
Abducent
42
what is CN8?
vestibulocochlear
43
what is CN9?
glossopharyngeal
44
what is CN10?
vagus
45
what is CN11?
accessory
46
what is CN7?
facial
47
what is CN12?
hypoglossal
48
how many pairs of spinal nerves?
31 pairs
49
what are the 3 main venous systems
1. intracranial: cerebral veins (sinuses) 2. superficial veins 3. deep veins
50
what are the two main veins of the neck?
internal and external jugular veins
51
what are the subclavian artery branches?
pre-scalene: - vertebral artery - internal thoracic artery - thyrocervical trunk post-scalene: - dorsal scapular artery
52
where does the common carotid artery divides/bifurcates?
C3 or C4
53
what does the external carotid artery supply to?
face and neck
54
what does the internal carotid artery supply to?
brain and eyes
55
what happens when the TMJ is dislocated
the mandible dislocates anterior to the articular tubercle
56
what are the 4 parts of the TMJ?
- articular disc - articular tubercle - mandibular fossa - mandibular condyles
57
articular capsule
loose covering around the circumference of the TMJ
58
TMJ-Sphenomandibular ligament
supporting, extrinsic ligament, it extends from the spine of the sphenoid to the medial surface of the ramus of the mandible - does not contribute significantly to the strength of the TMJ -
59
TMJ-Stylomandibular Ligament
supporting, extrinsic ligament, it extends from the styloid process of the temporal bone to the inferior and posterior borders of ramus of mandible

MSK TEST 1 (6 decks)

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