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Anatomy > MOINA of Facial expressions and mastication > Flashcards

MOINA of Facial expressions and mastication Flashcards

1
Q

origin of levator palpebrae superioris

A

lesser wing of sphenoid bone (anterior surface)

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2
Q

insertion of levator palpebrae superioris

A

upper eyelid (fascia & skin)

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3
Q

nerve of levator palpebrae superioris

A

oculomotor nerve (CN III)

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4
Q

action of levator palpebrae superioris

A

elevates upper eyelid

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5
Q

origin of buccinator

A

maxilla & mandible (posterior alveolar process of both bones); pterygomandibular raphe

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6
Q

insertion of buccinator

A

modiolus (just lateral to the angle of the mouth)

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7
Q

nerve of buccinator

A

facial nerve (CN VII)

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8
Q

action of buccinator

A

compresses cheek(s)

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9
Q

origin of corrugator supercilli

A

frontal bone just above nose (lateral to glabella)

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10
Q

insertion of corrugator supercilli

A

skin of medial portion of eyebrows

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11
Q

nerve of corrugator supercilli

A

facial nerve (CN VII) (zygomatic branch)

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12
Q

action of corrugator supercilli

A

draws eyebrows downward & medially (“thinker’s brow”)

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13
Q

origin of depressor anguli oris

A

along oblique line of mandible; lateral aspect of mental tubercle of mandible

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14
Q

insertion of depressor anguli oris

A

modiolus (near angle of mouth)

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15
Q

nerve of depressor anguli oris

A

facial nerve (CN VII)

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16
Q

action of depressor anguli oris

A

depresses angle(s) of mouth (frown)

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17
Q

origin of depressor labii inferioris

A

mandible (between symphysis & mental foramen)

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18
Q

insertion of depressor labii inferioris

A

skin & fascia of lower lip

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19
Q

nerve of depressor labii inferioris

A

facial nerve (CN VII)

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20
Q

action of depressor labii inferioris

A

draws lower lip downward & laterally; everts lower lip

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21
Q

origin of depressor septi nasi

A

incisive fossa of maxilla

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22
Q

insertion of depressor septi nasi

A

septum & alar cartilage of nose

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23
Q

nerve of depressor septi nasi

A

facial nerve (CN VII)

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24
Q

action of depressor septi nasi

A

constricts nostrils

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25
Q

origin of frontalis

A

galea aponeurotica

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26
Q

insertion of frontalis

A

skin & fascia above nose & eyes

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27
Q

nerve of frontalis

A

facial nerve (CN VII), temporal branch of

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28
Q

action of frontalis

A

draws scalp posteriorly to raise eyebrows & wrinkle brow (surprise)

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29
Q

origin of levator anguli oris

A

below infraorbital foramen of maxilla

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30
Q

insertion of levator anguli oris

A

modiolus (near angle of mouth)

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31
Q

nerve of levator anguli oris

A

facial nerve (CN VII)

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32
Q

action of levator anguli oris

A

elevates angle(s) of mouth (smiling)

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33
Q

origin of levator labii superioris

A

medial inferior orbital margin of maxilla

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34
Q

insertion of levator labii superioris

A

upper lip muscles

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35
Q

nerve of levator labii superioris

A

facial nerve (CN VII)

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36
Q

action of levator labii superioris

A

elevates upper lip; everts upper lip

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37
Q

origin of levator labii superioris alaeque nasi

A

frontal process of maxilla

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38
Q

insertion of levator labii superioris alaeque nasi

A

lateral slip: upper lip muscles; medial slip: alar cartilage of nose

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39
Q

nerve of levator labii superioris alaeque nasi

A

facial nerve (CN VII)

40
Q

action of levator labii superioris alaeque nasi

A

elevates upper lip; flares nostrils; everts upper lip

41
Q

origin of mentalis

A

incisive fossa of mandible

42
Q

insertion of mentalis

A

skin & fascia of chin

43
Q

nerve of mentalis

A

facial nerve (CN VII)

44
Q

action of mentalis

A

elevation of lower lip; everts lower lip; wrinkles skin of chin

45
Q

origin of nasalis

A

transverse part: maxilla (lateral to nose); alar part: maxilla, superior to canine alveolar process

46
Q

insertion of nasalis

A

transverse part: opposite side nasalis over upper cartilage of nose; alar part: alar cartilage of nose (nasal wing)

47
Q

nerve of nasalis

A

facial nerve (CN VII)

48
Q

action of nasalis

A

flares nostrils (particularly in forced respiration)

49
Q

origin of occipitalis

A

lateral 2/3 of superior nuchal line & EOP

50
Q

insertion of occipitalis

A

galea aponeurotica

51
Q

nerve of occipitalis

A

facial nerve (CN VII), posterior auricular branch

52
Q

action of occipitalis

A

draws back scalp to raise eyebrows & wrinkle brow (surprise)

53
Q

origin of orbicularis oculi

A

orbital portion: nasal process of frontal bone; palpebral portion: palpebral ligament; lacrimal portion: lacrimal crest of lacrimal bone

54
Q

insertion of orbicularis oculi

A

circumferentially around orbit meeting at the origin

55
Q

nerve of orbicularis oculi

A

facial nerve (CN VII) (zygomatic branch)

56
Q

action of orbicularis oculi

A

closes eye tightly, squinting of the eye; depresses upper eye lid, elevates lower eyelid (palpebral part)

57
Q

origin of orbicularis oris

A

modiolus (just lateral to angle of mouth)

58
Q

insertion of orbicularis oris

A

circumferentially around mouth; blends with other muscles

59
Q

nerve of orbicularis oris

A

facial nerve (CN VII)

60
Q

action of orbicularis oris

A

closes mouth; protrudes lips (puckering of lips)

61
Q

origin of platysma

A

subcutaneous fascia (over deltoid-pectoral region)

62
Q

insertion of platysma

A

mandible & subcutaneous fascia of lower face

63
Q

nerve of platysma

A

facial nerve (CN VII)

64
Q

action of platysma

A

tenses skin over lower neck (creates ridge in skin); depress mandible & lower lip

65
Q

origin of procerus

A

nasal bone & cartilages

66
Q

insertion of procerus

A

skin & fascia between eyebrows

67
Q

nerve of procerus

A

facial nerve (CN VII) (superior buccal branches)

68
Q

action of procerus

A

draws medial eyebrow downward (menacing expression); wrinkles skin of superior nose

69
Q

origin of risorius

A

parotid fascia (superficial to masseter)

70
Q

insertion of risorius

A

modiolus (near angle of mouth)

71
Q

nerve of risorius

A

facial nerve (CN VII)

72
Q

action of risorius

A

draws angle of mouth laterally (false smile)

73
Q

origin of zygomaticus major

A

zygomatic bone (anterior to zygomatic-temporal suture)

74
Q

insertion of zygomaticus major

A

modiolus (near angle of mouth)

75
Q

nerve of zygomaticus major

A

facial nerve (CN VII)

76
Q

action of zygomaticus major

A

elevates angle of mouth (smiling); pulls angle of mouth laterally

77
Q

origin of zygomaticus minor

A

zygomatic bone (posterior to zygomaticmaxillary suture)

78
Q

insertion of zygomaticus minor

A

skin, fascia & muscles of upper lip

79
Q

nerve of zygomaticus minor

A

facial nerve (CN VII)

80
Q

action of zygomaticus minor

A

elevates upper lip (smile); everts upper lip

81
Q

origin of masseter

A

Zygomatic Arch of Temporalis

82
Q

insertion of masseter

A

Angle of Mandible

83
Q

nerve of masseter

A

Trigeminal N. (V3), Mandibular Branch

84
Q

action of masseter

A

Closes (elevates) the jaw

85
Q

origin of medial/internal pterygoid

A

Medial surface of Lateral Pterygoid Plate

86
Q

insertion of medial/internal pterygoid

A

Medial aspect of the angle of the mandible

87
Q

nerve of medial/internal pterygoid

A

Trigeminal N. (V3), Mandibular Branch

88
Q

action of medial/internal pterygoid

A

Closes (elevates) the jaw

89
Q

origin of temporalis

A

Temporal Fossa of Temporalis and Sphenoid

90
Q

insertion of temporalis

A

Coronoid Process of Mandible

91
Q

nerve of temporalis

A

Trigeminal N. (V3), Mandibular Branch

92
Q

action of temporalis

A

Anterior Fibers: closes (elevates) jaw; Middle + Posterior fibers: Retract mandible (open jaw)

93
Q

origin of lateral/external pterygoid

A

Superior Head: Greater wing of Sphenoid; Inferior Head: Lateral Pterygoid Plate

94
Q

insertion of lateral/external pterygoid

A

Joint capsule of Condylar Process

95
Q

nerve of lateral/external pterygoid

A

Trigeminal N. (V3), Mandibular Branch

96
Q

action of lateral/external pterygoid

A

Protrusion of the jaw. The only muscle of the masticators to protrude the jaw

Anatomy (7 decks)

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