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Muscles Of Facial Expression Flashcards

1
Q

5 branches of facial nerves

A

Temporal
Zygomatic
Buccal
Mandibular
Cervical

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2
Q

Functions of facial expression muscles

A

Show emotions and expressions
Speech
Mastication

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3
Q

Where do the muscles of facial expressions lie?

A

Subcutaneous fascia (superficial layer)

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4
Q

Orbicularis oris origin and insertion

A

Origin - anterior nasal spine and midline above chin.

Insertion - fibres interlace with muscles around lips.

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5
Q

Levator Labii Superioris origin and insertion

A

Origin - lower rim of orbit

Insertion - fibres of orbicularis oris at upper lip.

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6
Q

Depressor Labii Inferioris origin and insertion

A

Origin - Beneath lowest part of oblique line of mandible

Insertion - Orbicularis oris in lower lip.

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7
Q

Zygomaticus minor origin and insertion

A

Origin - zygomatic arch

Insertion - orbicularis oris (upper fibres)

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8
Q

Zygomaticus major origin and insertion

A

Origin - zygomatic arch

Insertion - orbicularis oris at angle of mouth

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9
Q

Levator anguli oris origin and insertion

A

Origin - canine fossa of maxilla

Insertion - orbicularis oris at corner of mouth

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10
Q

Depressor anguli oris origin and insertion

A

Origin - beneath angle of mandible

Insertion - angles of mouth and blends with orbicularis oris

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11
Q

Mentalis origin and insertion

A

Origin - anterior surface of mandible (incisive fossa)

Insertion - skin covering skin

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12
Q

Buccinator origin and insertion

A

Origin - pterygomandibular raphae and buccal alveolar bone.

Insertion - orbicularis oris at corner of mouth.

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13
Q

How does the buccinator aid in mastication

A

Works in opposition with tongue to direct food to occlusal surfaces of teeth

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14
Q

Risorius origin and insertion

A

Origin - angle of mandible

Insertion - orbicularis oris at corners of mouth

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15
Q

Muscles that lie in the subcutaneous fascia can be divided into which groups

A

Mouth
Scalp
Neck
Eyes
Nose
Ears

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16
Q

3 parts of occipitofrontalis and the part associated with facial expressions

A

Frontalis (ass. with facial expressions)
Occipitalis
Galea aponeurotica

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17
Q

Occipitofrontalis origin and insertion

A

Origin - connective tissue of scalp

Insertion - skin of frontal regions of eyebrows

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18
Q

How many facial expression muscles are associated with the mouth

A

10

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19
Q

How many facial expression muscles are associated with the scalp

A

1
Occipitofrontalis

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20
Q

How many facial expression muscles are associated with neck

A

1
Platysma

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21
Q

Platysma origin and insertion

A

Origin - clavicle and shoulder

Insertion - lower border of mandible, skin and muscle of lower face and mouth

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22
Q

How many facial expression muscles are associated with the eyes

A

3
Orbicularis oculi
Corrugator
Procerus

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23
Q

Orbicularis oculi orbital

A

Horseshoe shape encircling eye.

Closes eye forcefully.

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24
Q

Orbicularis oculi innervation and blood supply

A

Nerve - facial nerve; zygomatic and temporal branches

Blood supply - superficial temporal, facial and maxillary arteries

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25
Q

Corrugator origin and insertion

A

Origin - bridge of nose

Insertion - skin of lateral part of eyebrow

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26
Q

Procerus origin and insertion

A

Origin - bridge of nose

Insertion - medial end of eyebrows

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27
Q

Muscle of facial expression associated with the nose

A

Nasalis
2 parts - dilator naris and compressor naris

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28
Q

Nerve and blood supply of nasalis

A

Innervation - Facial nerve; buccal branches

Blood supply - Facial artery

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29
Q

Dilator naris
(Origin, insertion and action)

A

Origin - nasal margin of maxilla

Insertion - skin of nostril

Actions - flares the nostril

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30
Q

Compressor naris
(Origin, insertion and action)

A

Origin - top of maxillary canine ridge

Insertion - midline over nasal cartilage

Action - closes nostrils

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31
Q

What facial muscles act on external ear

A

Anterior auricular
Superior auricular
Posterior auricular

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32
Q

Anterior auricular
(Origin, insertion, action, innervation and blood supply)

A

Origin - scalp and temporal fascia

Insertion - anterior medial aspect of helix of ear

Action - pulls ear forward slightly

Innervation - facial nerve; temporal branch

Blood supply - posterior auricular artery

33
Q

Superior auricular
(Origin, insertion, action, innervation and blood supply)

A

Origin - scalp and temporal fascia

Insertion - superior medial aspect of ear

Action - raises the ease

Nerve supply - facial nerve; temporal branch

Blood supply - posterior auricular artery

34
Q

Posterior auricular
(Origin, insertion, action, innervation and blood supply)

A

Origin - superior lateral aspect of mastoid process

Inversion - inferior medial aspect of auricle in ear

Action - pulls ear back

Innervation - facial nerve; temporal branch

Blood supply - posterior auricular artery

35
Q

Conditions that may affect functionality of facial muscles and how can they impact the patient and clinician

A

Bell’s Palsy
Stroke
Surgery
- difficulties swallowing, talking, smiling.
- communication, injections may be more difficult.

36
Q

Orbicularis oris action

A

Closed and opens mouth (elevates and depresses).
Compression and protrusion of lips.

37
Q

Orbicularis oris nerve supply

A

Facial nerve; buccal branch.

38
Q

Orbicularis oris blood supply

A

Facial, maxillary and superficial temporal arteries.

39
Q

Which muscle circles the oral cavity in lip tissue

A

Orbicularis oris

40
Q

Levator Labii Superioris action

A

Elevates upper lip

41
Q

Levator Labii Superioris innervation

A

Facial nerve; zygomatic and buccal branches.

42
Q

Levator Labii Superioris blood supply

A

Facial and maxillary arteries.

43
Q

Depressor Labii Inferioris action

A

Depresses lower lip

44
Q

Depressor Labii Inferioris innervation

A

Facial nerve; mandibular branch.

45
Q

Depressor Labii Inferioris blood supply

A

Facial and maxillary arteries.

46
Q

Zygomaticus minor action

A

Elevate upper lip.

47
Q

Zygomaticus minor innervation

A

Facial nerve; buccal and zygomatic branches.

48
Q

Zygomaticus minor blood supply

A

Facial artery.

49
Q

Zygomatic major action

A

Elevates corners of mouth

50
Q

Zygomatic major innervation

A

Facial nerve; buccal and zygomatic branches.

51
Q

Zygomatic major blood supply

A

Facial artery

53
Q

Levator anguli oris action

A

Elevates corner of mouth

54
Q

Levator anguli oris innervation

A

Facial nerve; buccal and zygomatic branches.

55
Q

Levator anguli oris blood supply

A

Facial and maxillary arteries.

56
Q

Depressor anguli oris action

A

Depresses corner of mouth

57
Q

Depressor anguli oris innervation

A

Facial nerve; buccal and mandibular branches.

58
Q

Depressor anguli oris blood supply

A

Facial and maxillary arteries

59
Q

Mentalis action

A

Pulls skin of chip up

60
Q

Mentalis innervation

A

Facial nerve; mandibular branch.

61
Q

Mentalis blood supply

A

Facial and maxillary arteries.

63
Q

Buccinator action

A

Pulls corner of mouth bank.
Compresses check against buccal surfaces of molars.

64
Q

Buccinator innervation

A

Facial nerve; buccal branch.

65
Q

Buccinator blood supply

A

Facial and maxillary arteries.

66
Q

Risorius action

A

Retracts angle of mandible (smiling)

67
Q

Risorius innervation and blood supply

A

Innervation - facial nerve; buccal branch

Blood supply - facial artery.

68
Q

Occipitofrontalis action

A

Pulls scalp back.
Elevates eyebrows.
(Wrinkles scalp)

69
Q

Occipitofrontalis innervation

A

Facial nerve; temporal branch.

70
Q

Occipitofrontalis blood supply

A

Superficial temporal and ophthalmic arteries.

71
Q

Platysma action

A

Pulls corners of mouth down.
Wrinkles skin of chin and neck.

72
Q

Platysma innervation and blood supply

A

Innervation - facial nerve; cervical branch.

Blood supply - facial artery; thyrocervical trunk.

73
Q

Orbicularis oculi palpebrae

A

Arches laterally within eyelid.

Closes eye gently (blinking).

75
Q

Corrugator action

A

Pulls eyebrows medially.

76
Q

Corrugator innervation and blood supply

A

Nerve supply - facial nerve; temporal branch

Blood supply - superficial temporal artery

77
Q

Procerus action

A

Pulls eyebrows down.
Wrinkles nose.

78
Q

Procerus innervation and blood supply

A

Nerve supply - facial nerve; zygomatic branch

Blood supply - facial artery

ODS (52 decks)

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