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MSAK > MUSCLES of FACIAL EXPRESSIONS > Flashcards

MUSCLES of FACIAL EXPRESSIONS Flashcards

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1
Q

ORBICULARIS OCCULI

Origin and Innervation?

A

O: ORBITAL PART- MAXILLARY process of the
FRONTAL bone and FRONTAL process of MAXILLA
PALPEBRAL PART- Palpebral ligament
LACRIMAL PART- Lacrimal Crest of the Lacrimal bone

N: FACIAL NERVE (CN VII)

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2
Q

ORBICULARIS OCCULI

Insertion?

A

I: Circumferentially around orbit with the insertion

meeting at the origin

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3
Q

ORBICULARIS OCCULI

Action?

A

A: CLOSES eye TIGHTLY, squinting, DEPRESSION of
Upper eyelid
PALPABREL PART-ELEVATION of LOWER LID

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4
Q

LEVATOR PALPABRAE SUPERIORIS

ORIGIN and INNERVATION?

A

O: INNER SURFACE of the LESSER WING of
SPHENOID BONE

N: OCULOMOTOR NERVE (CN III)

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5
Q

LEVATOR PALPABRAE SUPERIORIS

INSERTION?

A

I: Upper Eyelid (fascia and skin)

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6
Q

LEVATOR PALPABRAE SUPERIORIS

ACTION?

A

A: ELEVATION of UPPER EYELIDS

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7
Q

LEVATOR LABII SUPERIORIS

Origin and Innervation?

A

O: MEDIAL INFERIOR Orbital Margin of maxilla
more medial and superior to LAO

N: FACIAL NERVE (CN VII)

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8
Q

LEVATOR LABII SUPERIORIS

INSERTION?

A

I: Upper Lip muscles

(NOT MODIOLUS, CLOSE TO MEDIAL UPPER LIP, fibres run at a slight medial angle from orbital margin to upper lip)

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9
Q

LEVATOR LABII SUPERIORIS

ACTION?

A

A: ELEVATION and EVERSION of upper lip

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10
Q

LEVATOR ANGULI ORIS

ORIGIN and INNERVATION?

A

O: slightly INFERIOR to the FORAMEN of MAXILLA

N: FACIAL NERVE (CN VII)

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11
Q

LEVATOR ANGULI ORIS

INSERTION?

A

I: MODIOLUS (near angle of the mouth)

slightly more lateral than LLS, and muscle fibres travel vertical

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12
Q

LEVATOR ANGULI ORIS

ACTION?

A

A: ELEVATES ANGLE of mouth (smiling)

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13
Q

what is MODIOLUS?

A

-Facial muscles held together by fibrous tissue
-Located LATERAL and slightly SUPERIOR to each angle
of the mouth

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14
Q

what muscles area included in MODIOLUS?

A 
1 ORBICULARIS ORIS
2 RISORIUS
3 BUCCINATOR
4 ZYGOMATICUS MAJOR
5 LEVATOR ANGULI ORIS
6 DEPRESSIOR ANGULI ORIS
7 QUADRATUS LABII SUPERIORIS
8 QUADRATUS LABII INFERIORIS
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15
Q

LEVATOR LABII SUPERIORIS ALAEQUE NASI

ORIGIN and INNERVATION?

A

O: FRONTAL PROCESS of maxilla

N: FACIAL NERVE (CN VII)

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16
Q

LEVATOR LABII SUPERIORIS ALAEQUE NASI

INSERTION?

A

I: LATERAL SLIP- UPPER LIP muscles

MEDIAL SLIP- ALAR CARTILAGE of nose

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17
Q

LEVATOR LABII SUPERIORIS ALAEQUE NASI

ACTION?

A

A: RAISES and PROTRUDES UPPER LIP (horses face)

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18
Q

RISORIUS

ORIGIN and INNERVATION?

A

O: PAROTID FASCIA (over masseter)

N: Facial Nerve (CN VII)

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19
Q

RISORIUS

INSERTION?

A

I: MODIOLUS (angle of mouth)

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20
Q

RISORIUS

ACTION?

A

A: pulls ANGLE of mouth LATERALLY (fake smile)

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21
Q

ZYGOMATICUS MINOR

ORIGIN and INNERVATION?

A

O: ZYGOMATIC BONE (maxillary process of zyg. bone)
N: facial nerve (CN VII)

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22
Q

ZYGOMATICUS MINOR

insertion?

A

I: ORBICULARIS ORIS (skin, muscles, fascia of upper lip)

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23
Q

ZYGOMATICUS MINOR

ACTION?

A

A: ELEVATION and EVERSION of UPPER LIP (scary smile)

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24
Q

ORBICULARIS ORIS

ORIGIN and INNERVATION?

A

O: MODIOLUS
N: FACIAL NERVE (CN VII)

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25
ORBICULARIS ORIS | INSERTION?
I: circumferentially around mouth blending with other muscles
26
ORBICULARIS ORIS | ACTION?
A: CLOSES and PROTRUDES LIPS; PUCKERS LIPS | (duck face)
27
ZYGOMATICUS MAJOR | ORIGIN and INNERVATION
O: ZYGOMATIC BONE (Temporal Process of zyg. bone) N: facial nerve (CN VII)
28
ZYGOMATICUS MAJOR | INSERTION?
I: MODIOLUS (angle of mouth)
29
ZYGOMATICUS MAJOR | action?
A: ELEVATES and PULLS ANGLE of mouth LATERALLY (smiling)
30
BUCCINATOR | ORIGIN and INNERVATION?
O: POSTERIOR ALVEOLAR PROCESSES' of mandible, maxilla and PTERYGOMANDIBULAR RAPHE/LIGAMENT N: FACIAL NERVE (CN VII)
31
BUCCINATOR | INSERTION?
I: MODIOLUS
32
BUCCINATOR | ACTION?
A: COMPRESSION of cheek against teeth
33
TEMPOROPARIETALIS | ORIGIN and INNERVATION?
O: TEMPORAL FASCIA, superoanterior to ear N: FACIAL NERVE (CN VII) temporal branch
34
TEMPOROPARIETALIS | INSERTION?
I: LATERAL border of GALEA APONEUROTICA
35
TEMPOROPARIETALIS | ACTION?
A: ELEVATES EAR; stabilizes galea aponeurotica
36
CORREGATOR SUPERCILLI | ORIGIN and INNERVATION?
O: FRONTAL BONE, just SUPERIOR to supraorbital margin MEDIAL ASPECT--lateral to glabella (sits horizontally over eye) N: facial nerve (CN VII) ZYGOMATIC BRANCH
37
CORREGATOR SUPERCILLI | INSERTION?
I: SKIN of MIDDLE of EYEBROWS
38
CORREGATOR SUPERCILLI | action?
A: pulls EYEBROWS DOWNWARD MEDIALLY, with vertical wrinkles in forehead (thinker's brow)
39
OCCIPITOFRONTALIS (OCCIPITALIS) | ORIGIN and INNERVATION?
O: LATERAL 2/3 SUP. NUCHAL LINE, EXTERNAL OCCIPITAL PROTUBERANCE and MASTOID PROCESS (temporal bone) N: facial Nerve (CN VII) POST. AURICULAR BRANCH
40
OCCIPITOFRONTALIS (OCCIPITALIS) | INSERTION?
I: GALEA APONEUROTICA (superior dense fascia of | skull)
41
OCCIPITOFRONTALIS (OCCIPITALIS) | ACTION?
A: Pulls skin of scalp POSTERIORLY, RAISES | EYEBROWS & WRINKLES FOREHEAD (surprise!)
42
OCCIPITOFRONTALIS (FRONTALIS) | ORIGIN and INNERVATION?
O: GALEA APONEUROTICA N: FACIAL NERVE (CN VII) temporal branch
43
OCCIPITOFRONTALIS (FRONTALIS) | INSERTION?
I: skin and fascia above nose and eyes eyes
44
OCCIPITOFRONTALIS (FRONTALIS) | ACTION?
A: pulls skin of scalp POSTERIORLY to raise eyebrows and wrinkle eyebrows (surprise)
45
PROCERUS | ORIGIN and INNERVATION?
O: FASCIA covering INFERIOR ASPECT of NASAL BONES and SUPERIOR ASPECT of lateral nasal cartilage N: FACIAL NERVE (CN VII) Superior Buccal Branches
46
PROCERUS | INSERTION?
I: skin and fascia b/w eyebrows
47
PROCERUS | ACTION?
A: pulls INNER ANGLE of BROWS DOWNWARD and produces TRANSVERSE WRINKLES over bridge of nose (look of disgust)
48
AURICULARIS | ORIGIN and INNERVATION?
O:ANTERIOR- Galea Aponeurotica SUPERIOR- Galea Aponeurotica POSTERIOR- Temporal bone (MASTOID AREA) N: FACIAL NERVE (CN VII)
49
AURICULARIS | INSERTION?
I: ANTERIOR-ant. ear SUPERIOR- superior ear POSTERIOR- post. ear
50
AURICULARIS | action?
A: ANT. pulls ear forward (PROTRACTION) SUP. pulls ear superiorly (ELEVATION of ear) POST. pulls ear back (RETRACTS EAR)
51
NASALIS | ORIGIN and INNERVATION?
O: TRANSVERSE PART (SUPERIOR)- MAXILLA (lateral to nose) ALAR PART (INFERIOR)- MAXILLA (sup. to Canine Alveolar Processes) N: facial nerve
52
NASALIS | INSERTION?
I: TRANSVERSE-opposite side NASALIS (the 2 pieces on either side of nose MEET IN MIDDLE, at UPPER CARTILAGE of NOSE); ALAR- ALAR CARTILAGE of nose (nasal wings)
53
NASALIS | action?
A: FLARES NOSTRILS (Esp. in forced respiration) | (superior transverse part)
54
DEPRESSOR SEPTI NASI | ORIGIN and INNERVATION?
O: INCISIVE FOSSA of MAXILLA N: FACIAL NERVE (CN VII)
55
DEPRESSOR SEPTI NASI | INSERTION?
I: SEPTUM and ALAR CARTILAGE of nose
56
DEPRESSOR SEPTI NASI | ACTION?
A: DEPRESSES INFERIOR ASPECT of NOSE (to CONSTRICT NOSTRILS)
57
MENTALIS | ORIGIN and INNERVATION?
O: INCISIVE FOSSA of MANDIBLE N: FACIAL NERVE (CN VII)
58
MENTALIS | INSERTION?
I: skin and fascia of CHIN
59
MENTALIS | ACTION?
A: ELEVATION and EVERSION of LOWER LIP; | WRINKLES SKIN OF CHIN (pouting)
60
DEPRESSOR LABII INFERIORIS | ORIGIN and INNERVATION?
O: MANDIBLE (b/w symphysis and mental foramen) *the mandibular symphysis is the midline of chin* N: facial nerve (CN VII)
61
DEPRESSOR LABII INFERIORIS | INSERTION?
I: Skin and fascia of LOWER LIP
62
DEPRESSOR LABII INFERIORIS | ACTION?
A: draws LOWER LIP DOWNWARD and LATERALLY; | EVERSION of LOWER LIP
63
DEPRESSOR ANGULI ORIS | ORIGIN and INNERVATION?
O: OBLIQUE LINE of the mandible (lateral to mental tubercle) N: facial nerve (CN VII)
64
DEPRESSOR ANGULI ORIS | INSERTION?
I: MODIOLUS
65
DEPRESSOR ANGULI ORIS | ACTION?
A: DEPRESS ANGLE of mouth (frown)
66
PLATYSMA | ORIGIN and INNERVATION?
O: SUBCUTANEOUS FASCIA (deltopectoral region, below clavicle) N: facial nerve (CN VII)
67
PLATYSMA | INSERTION?
I: MANDIBLE and SUBCUTANEOUS FASCIA of lower face
68
PLATYSMA | action?
A: tenses skin over lower neck (creates lizard neck); | DEPRESSES MANDIBLE and LOWER LIP

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