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Head and Neck > Muscles of face and scalp > Flashcards

Muscles of face and scalp Flashcards

Moore Clinically Oriented Anatomy Table 8.3

1
Q

What is the origin of the frontal belly of the occipitofrontalis?

A

Epicranial Aponeurosis

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2
Q

What is the insertion of the frontal belly of occipitofrontalis?

A

Skin and subcutaneous tissue of eyebrows and forehead

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3
Q

What is the innervation of the frontal belly?

A

Temporal branch of the facial nerve

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4
Q

What is the action of the frontal belly of the occipitofrontalis?

A

Elevates the eyebrows.
Protracts the scalp
Wrinkles the skin of the forehead

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5
Q

What is the origin of the occipital belly of the occipitofrontalis?

A

Lateral two thirds of the superior nuchal lines

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6
Q

What is the insertion of the occipital belly of the occipitofrontalis?

A

Epicranial aponeurosis

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7
Q

What is the innervation of the occipital belly of the occipitofrontalis?

A

Posterior auricular branch of the facial nerve

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8
Q

What is the action of the occipital belly of the occipitofrontalis?

A

Retracts the scalp

Helps the frontal belly do its job.

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9
Q

What is the origin of orbicularis oculi?

A

Medial Palpebral ligament
Medial Orbital Margin
Lacrimal bone

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10
Q

What is the insertion of the orbicularis oculi?

A

Skin around the margin of the orbit

Superior and inferior tarsal plates

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11
Q

What is the innervation of the orbicularis oculi?

A

Temporal and zygomatic branches of the facial nerve

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12
Q

What is the function of orbicularis oculi?

A

Orbital part - Shuts the eyelids tightly

Palpebral part - Shuts the eyelids closely

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13
Q

What is the origin of corrugator supercilii?

A

Medial end of the superciliary arch

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14
Q

What is the insertion of the corrugator supercilii?

A

Superior to the middle of the supraorbital margin and the superciliary arch.

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15
Q

What is the innervation of the corrugator supercilii?

A

Temporal branch of the facial nerve

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16
Q

What is the action of the corrugator supercilii?

A

Draws the eyebrows inferiorly and medially, creating vertical ridges above the nose.

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17
Q

What is the origin of procerus?

A

Nasal bone and upper lateral nasal cartilage

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18
Q

What is the insertion of the procerus?

A

Skin of the lower forehead between the eyebrows

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19
Q

What is the innervation of the procerus?

A

Temporal and lower zygomatic branches from the facial nerve. A supply from its buccal branch has also been described.

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20
Q

What is the action of the procerus?

A

Depresses the medial eyebrows, producing transverse wrinkles on the bridge of the nose

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21
Q

What are the parts of nasalis muscle?

A

Alar part

Transverse part

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22
Q

What is the origin of the transverse part of the nasalis?

A

Maxilla just lateral to nose

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23
Q

What is the insertion of the transverse part of the nasalis?

A

Aponeurosis extending over the dorsum of the nose

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24
Q

What is the origin of the alar part of the nasalis?

A

Maxilla over the lateral incisor

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25
Q

What is the insertion of the alar part of the nasalis?

A

Alar cartilage of nose

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26
Q

What is the innervation of the nasalis?

A

Buccal branch of the facial nerve

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27
Q

What is the function of nasalis?

A

Transverse part - Compresses the nasal aperture

Alar part - Draws cartilage downward and laterally, opening nostril

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28
Q

What is the origin of the orbicularis oris?

A

Medial maxilla and mandible; deep surface of the perioral skin; angle of mouth (modiolus)

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29
Q

What is the insertion of the orbicularis oris?

A

Mucous membrane of the lips

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30
Q

What is the innervation of the orbicularis oris?

A

Buccal branch of facial nerve

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31
Q

What is the function of the orbicularis oris?

A

Tonus closes oral fissure

Phasic contraction compresses and protudes lips (kissing) and resist distension (when blowing)

32
Q

What is the origin of the levator labii superioris?

A

Infraorbital margin of maxilla

33
Q

What is the insertion of the levator labii superioris?

A

Skin of the upper lip

34
Q

What is the innervation of the levator labii superioris?

A

Buccal branch of the facial nerve

35
Q

What is the function of the levator labii superioris?

A

Elevate or evert upper lip

Deepen nasolabial sulcus (showing sadness)

36
Q

What is the origin of the zygomaticus minor?

A

Anterior aspect of zygomatic bone

37
Q

What is the insertion of the zygomaticus minor?

A

Skin of the upper lip

38
Q

What is the innervation of the zygomaticus minor?

A

Buccal branch of the facial nerve

39
Q

What is/are the function/functions of zygomaticus minor?

A

Elevates or everts the upper lips

Deepens the nasolabial sulcus

40
Q

What is the origin of buccinator?

A

Alveolar part of the maxilla and mandible, mandible, pterygomandibular raphe.

41
Q

What is the insertion of buccinator?

A

Angle of mouth (modiolus); Orbicularis oris

42
Q

What innervates the buccinator?

A

Buccal branch of the facial nerve

43
Q

What are the functions of buccinator?

A

Presses the cheeks against molar teeth
Helps the tongue to keep the food in the occlusal surface and out of the oral vestibule
Resist distension (when blowing)

44
Q

What is the origin of the zygomaticus major?

A

Lateral aspect of the zygomatic bone

45
Q

What is the insertion of the zygomaticus major?

A

Modiolus (Angle of mouth)

46
Q

What is the innervation of the zygomaticus major?

A

Buccal branch of the facial nerve

47
Q

What is the function of the zygomaticus major?

A

Parts of dilators of mouth

Elevates labial commissure - Bilaterally to smile - Unilaterally to sneer

48
Q

What is the origin of the levator anguli oris?

A

Infraorbital maxilla

49
Q

What is the insertion of the levator anguli oris?

A

Modiolus (Angle of mouth)

50
Q

What innervates the levator anguli oris?

A

Buccal branch of the facial nerve

51
Q

What is the function of the levator anguli oris?

A

Part of the dilators of the mouth

Widens the oral fissure when grinning or grimacing

52
Q

What is the origin of risorius?

A

Parotid fascia and buccal skin

53
Q

What is the insertion of the risorius?

A

Angle of mouth (modiolus)

54
Q

What innervates the risorius?

A

Buccal branch

55
Q

What is the action of the risorius?

A

Retracts or depresses the labial commissures

Dilators of mouth

56
Q

What is the origin of depressor anguli oris?

A

Anterolateral base of mandible

57
Q

What is the insertion of depressor anguli oris?

A

Angle of mouth (modiolus)

58
Q

What is the innervation of depressor anguli oris?

A

Marginal mandibular branch of facial nerve

59
Q

What is the function of depressor anguli oris?

A

Depresses the labial commissures

60
Q

What is the origin of depressor labii inferioris?

A

Platysma and anterolateral surface of mandible

61
Q

What is the insertion of depressor labii inferioris?

A

Skin of lower lip

62
Q

What is the innervation of depressor labii inferioris?

A

Marginal mandibular branch of facial nerve

63
Q

What is the function of depressor labii inferioris?

A

Parts of dilators of mouth

Retracts (depresses) and everts (pouts) the lower lip

64
Q

What is the origin of mentalis?

A

Body of mandible (anterior to the roots of inferior incisors)

65
Q

What is the insertion of mentalis?

A

Mentolabial sulcus (Skin of chin)

66
Q

What innervates the mentalis?

A

Marginal mandibular branch of the facial nerve

67
Q

What is the function of mentalis?

A

Elevates and protudes lower lip, showing doubt by elevating the skin of the chin

68
Q

What is the origin of platysma?

A

Subcutaneous tissue of infraclavicular and supraclavicular regions

69
Q

What is the insertion of platysma?

A

Base of mandible
Skin of lower lip and cheek
Modiolus (angle of mouth)
Orbicularis oris

70
Q

What is the innervation of platysma?

A

Cervical branches of facial nerve from the parotid plexus

71
Q

What is the function of platysma?

A

Depresses the mandible (against resistance)

Tenses the skin of inferior face and neck (conveying tension or stress)

72
Q

What is the origin of despressor septi nasi?

A

Incisive fossa of the maxilla

73
Q

What is the insertion of depressor septi nasi?

A

Nasal septum and back of alar part of the nasalis

74
Q

What is the innervation of depressor septi nasi?

A

Buccal branch of the facial nerve

75
Q

What is the function of depressor septi nasi?

A

Depresses the nasal septum

Helps the alar part in flaring nostrils

Head and Neck (8 decks)

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