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MSAK > MUSCLES of FACIAL EXPRESSIONS > Flashcards

MUSCLES of FACIAL EXPRESSIONS Flashcards

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
Q

ORBICULARIS ORIS

INSERTION?

A

I: circumferentially around mouth blending with other muscles

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26
Q

ORBICULARIS ORIS

ACTION?

A

A: CLOSES and PROTRUDES LIPS; PUCKERS LIPS

(duck face)

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27
Q

ZYGOMATICUS MAJOR

ORIGIN and INNERVATION

A

O: ZYGOMATIC BONE (Temporal Process of zyg. bone)
N: facial nerve (CN VII)

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28
Q

ZYGOMATICUS MAJOR

INSERTION?

A

I: MODIOLUS (angle of mouth)

29
Q

ZYGOMATICUS MAJOR

action?

A

A: ELEVATES and PULLS ANGLE of mouth LATERALLY (smiling)

30
Q

BUCCINATOR

ORIGIN and INNERVATION?

A

O: POSTERIOR ALVEOLAR PROCESSES’ of mandible,
maxilla and PTERYGOMANDIBULAR
RAPHE/LIGAMENT

N: FACIAL NERVE (CN VII)

31
Q

BUCCINATOR

INSERTION?

A

I: MODIOLUS

32
Q

BUCCINATOR

ACTION?

A

A: COMPRESSION of cheek against teeth

33
Q

TEMPOROPARIETALIS

ORIGIN and INNERVATION?

A

O: TEMPORAL FASCIA, superoanterior to ear
N: FACIAL NERVE (CN VII) temporal branch

34
Q

TEMPOROPARIETALIS

INSERTION?

A

I: LATERAL border of GALEA APONEUROTICA

35
Q

TEMPOROPARIETALIS

ACTION?

A

A: ELEVATES EAR; stabilizes galea aponeurotica

36
Q

CORREGATOR SUPERCILLI

ORIGIN and INNERVATION?

A

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
Q

CORREGATOR SUPERCILLI

INSERTION?

A

I: SKIN of MIDDLE of EYEBROWS

38
Q

CORREGATOR SUPERCILLI

action?

A

A: pulls EYEBROWS DOWNWARD MEDIALLY, with vertical wrinkles in forehead (thinker’s brow)

39
Q

OCCIPITOFRONTALIS (OCCIPITALIS)

ORIGIN and INNERVATION?

A

O: LATERAL 2/3 SUP. NUCHAL LINE, EXTERNAL
OCCIPITAL PROTUBERANCE and
MASTOID PROCESS (temporal bone)

N: facial Nerve (CN VII) POST. AURICULAR BRANCH

40
Q

OCCIPITOFRONTALIS (OCCIPITALIS)

INSERTION?

A

I: GALEA APONEUROTICA (superior dense fascia of

skull)

41
Q

OCCIPITOFRONTALIS (OCCIPITALIS)

ACTION?

A

A: Pulls skin of scalp POSTERIORLY, RAISES

EYEBROWS & WRINKLES FOREHEAD (surprise!)

42
Q

OCCIPITOFRONTALIS (FRONTALIS)

ORIGIN and INNERVATION?

A

O: GALEA APONEUROTICA
N: FACIAL NERVE (CN VII) temporal branch

43
Q

OCCIPITOFRONTALIS (FRONTALIS)

INSERTION?

A

I: skin and fascia above nose and eyes eyes

44
Q

OCCIPITOFRONTALIS (FRONTALIS)

ACTION?

A

A: pulls skin of scalp POSTERIORLY to raise eyebrows and wrinkle eyebrows (surprise)

45
Q

PROCERUS

ORIGIN and INNERVATION?

A

O: FASCIA covering INFERIOR ASPECT of NASAL
BONES and SUPERIOR ASPECT of lateral nasal
cartilage

N: FACIAL NERVE (CN VII) Superior Buccal Branches

46
Q

PROCERUS

INSERTION?

A

I: skin and fascia b/w eyebrows

47
Q

PROCERUS

ACTION?

A

A: pulls INNER ANGLE of BROWS DOWNWARD and produces TRANSVERSE WRINKLES over bridge of nose (look of disgust)

48
Q

AURICULARIS

ORIGIN and INNERVATION?

A

O:ANTERIOR- Galea Aponeurotica
SUPERIOR- Galea Aponeurotica
POSTERIOR- Temporal bone (MASTOID AREA)

N: FACIAL NERVE (CN VII)

49
Q

AURICULARIS

INSERTION?

A

I: ANTERIOR-ant. ear
SUPERIOR- superior ear
POSTERIOR- post. ear

50
Q

AURICULARIS

action?

A

A: ANT. pulls ear forward (PROTRACTION)
SUP. pulls ear superiorly (ELEVATION of ear)
POST. pulls ear back (RETRACTS EAR)

51
Q

NASALIS

ORIGIN and INNERVATION?

A

O: TRANSVERSE PART (SUPERIOR)- MAXILLA (lateral
to nose)
ALAR PART (INFERIOR)- MAXILLA (sup. to Canine
Alveolar Processes)
N: facial nerve

52
Q

NASALIS

INSERTION?

A

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
Q

NASALIS

action?

A

A: FLARES NOSTRILS (Esp. in forced respiration)

(superior transverse part)

54
Q

DEPRESSOR SEPTI NASI

ORIGIN and INNERVATION?

A

O: INCISIVE FOSSA of MAXILLA

N: FACIAL NERVE (CN VII)

55
Q

DEPRESSOR SEPTI NASI

INSERTION?

A

I: SEPTUM and ALAR CARTILAGE of nose

56
Q

DEPRESSOR SEPTI NASI

ACTION?

A

A: DEPRESSES INFERIOR ASPECT of NOSE (to CONSTRICT NOSTRILS)

57
Q

MENTALIS

ORIGIN and INNERVATION?

A

O: INCISIVE FOSSA of MANDIBLE
N: FACIAL NERVE (CN VII)

58
Q

MENTALIS

INSERTION?

A

I: skin and fascia of CHIN

59
Q

MENTALIS

ACTION?

A

A: ELEVATION and EVERSION of LOWER LIP;

WRINKLES SKIN OF CHIN (pouting)

60
Q

DEPRESSOR LABII INFERIORIS

ORIGIN and INNERVATION?

A

O: MANDIBLE (b/w symphysis and mental foramen)
the mandibular symphysis is the midline of chin
N: facial nerve (CN VII)

61
Q

DEPRESSOR LABII INFERIORIS

INSERTION?

A

I: Skin and fascia of LOWER LIP

62
Q

DEPRESSOR LABII INFERIORIS

ACTION?

A

A: draws LOWER LIP DOWNWARD and LATERALLY;

EVERSION of LOWER LIP

63
Q

DEPRESSOR ANGULI ORIS

ORIGIN and INNERVATION?

A

O: OBLIQUE LINE of the mandible (lateral to mental
tubercle)
N: facial nerve (CN VII)

64
Q

DEPRESSOR ANGULI ORIS

INSERTION?

A

I: MODIOLUS

65
Q

DEPRESSOR ANGULI ORIS

ACTION?

A

A: DEPRESS ANGLE of mouth (frown)

66
Q

PLATYSMA

ORIGIN and INNERVATION?

A

O: SUBCUTANEOUS FASCIA (deltopectoral region, below clavicle)

N: facial nerve (CN VII)

67
Q

PLATYSMA

INSERTION?

A

I: MANDIBLE and SUBCUTANEOUS FASCIA of lower face

68
Q

PLATYSMA

action?

A

A: tenses skin over lower neck (creates lizard neck);

DEPRESSES MANDIBLE and LOWER LIP

MSAK (5 decks)

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