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AS II Module 4 > Lecture 1: facial muscles and parotid gland > Flashcards

Lecture 1: facial muscles and parotid gland Flashcards

1
Q

suprahyoid region muscles and nerve

A

mylohyoid
geniohyoid
digastric
stylohyoid

hypoglossal nerve

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2
Q

mylohyoid muscle (attachment and innervation)

A

mylohyoid line of the mandible to the hyoid bone

nerve to the mylohyoid (CN V3)

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3
Q

geniohyoid muscle (attachment and innervation)

A

mental spine of the mandible to the hyoid bone

C1 via hypoglossal nerve

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4
Q

digastric muscle- anterior belly (attachment and innervation)

A

digastric fossa of the mandible to intermediate tendon

nerve to the mylohyoid

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5
Q

digastric muscle- posterior belly (attachment and innervation)

A

mastoid notch to intermediate tendon

facial nerve

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6
Q

stylohyoid muscle (attachment and innervation)

A

styloid process of the temporal bone to the hyoid bone

facial nerve

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7
Q

functions of the suprahyoids

A

make up a significant part of the floor of the mouth and elevate the hyoid and larynx

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8
Q

hyopglossal nerve in the suprahyoid region

A
  • leaves the skull through the hypoglossal canal and descends just below the angle of the mandible
  • then crosses the external carotid artery
  • then crosses the lingual artery
  • travels deep to the mylohyoid muscle to reach the tongue
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9
Q

muscles of facial expression (general features)

A
  • in subcutaneous tissue of the anterior and posterior scalp, face, and neck
  • move the skin and change facial expression
  • attach to bone or fascia
  • develop from mesoderm in the second pharyngeal arches
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10
Q

occipitofrontalis muscle action

A

independent contraction of the occipital belly retracts the scalp and contraction of the frontal belly protracts it

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11
Q

occipitofrontalis occipital belly attachment

A

superior nochal line

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12
Q

occipitofrontalis muscle occipital belly attachment

A

superior nochal line

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13
Q

occipitofrontalis muscle frontal belly attachment

A

inserts into the skin and subcutaneous tissue of eyebrows and forehead

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14
Q

occipitofrontalis muscle occipital belly innervation

A

posterior auricular branch of facial nerve

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15
Q

occipitofrontalis muscle frontal belly innervation

A

temporal branches of facial nerve

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16
Q

orbicularis oris muscle action

A

tonic: close mouth
phasic: compresses and protrudes lips

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17
Q

orbicularis oris muscle attachments

A
  • medial maxilla and mandible, and angle of the mouth

- inserts within the mucous membrane of the lips

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18
Q

orbicularis oris muscle innervation

A

buccal and marginal mandibular branches of the facial nerve

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19
Q

buccinator muscle attachment

A
  • laterally to the alveolar process of the maxillae and mandible
  • pterygomandibular raphe (tendinous thickening of the buccopharyngeal fascia)
  • anteriorly it blends with fibers of the orbicularis
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20
Q

buccinator muscle innervation

A

buccal branch of the facial nerve

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21
Q

buccinator muscle actions

A

active in smiling
keeps cheeks taut
helps cheeks resist forces of whistling and sucking

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22
Q

muscles that help keep food betweenn the occlusal surfaces of the teeth during mastication and to prevent food from accumulating in the oral vestibule

A
  • orbicularis oris
  • buccinator
  • tongue
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23
Q

5 layers of the scalp

A
  • skin
  • connective tissue
  • epicranial aponeurosis
  • lose areolar tissue
  • pericranium
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24
Q

5 layers of the scalp- skin

A

thin, except in the occipital region, containing many sweat and sebaceous glands and hair follicles

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25
Q

5 layers of the scalp- connective tissue

A

forms the thick, dense, richly vascularized subcutaneous layer that is well supplied with cutaneous nerves

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26
Q

5 layers of the scalp- epicranial aponeurosis

A

broad, strong, tendinous sheet that serves as the attachment for the occipitofrontalis muscle

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27
Q

5 layers of the scalp- pericranium

A

dense layer of connective tissue that forms the external periosteum of the neurocranium

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28
Q

platysma muscle attachment

A
  • subcutaneous tissue of supra and infraclavicular regions

- base of mandible, skin of cheek, angle of mouth and orbicularis oris

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29
Q

platysma muscle action

A
  • from superior attachment, tenses the skin, producing vertical skin ridges
  • from inferior attachment, helps depress the mandible and draw corners of the mouth inferiorly, as in a grimace
30
Q

platysma muscle innervation

A

cervical branch of the facial nerve

31
Q

levator anguli oris muscle attachment

A

canine fossa of the maxilla immediately inferior to the infraorbital foramen to the angle of the mouth

32
Q

levator anguli oris muscle action

A

lifts the angles of the mouth

33
Q

levator anguli oris muscle innervation

A

buccal brach of facial nerve

34
Q

depressor anguli oris muscle attachment

A

external oblique line of the mandible to the angle of the mouth

35
Q

depressor anguli oris muscle action

A

pulls the angles of the mouth downward

36
Q

depressor anguli oris muscle innervation

A

marginal mandibular branch of facial nerve

37
Q

zygomaticus major muscle attachment

A

lateral aspect of the zygomatic bone and angle downward and medially to insert into the angle of the mouth

38
Q

zygomaticus major muscle action

A

draws the angle of the mouth upward and backward (como elvis)

39
Q

zygomaticus major muscle innervation

A

buccal branch of facial nerve (and some fibers from the zygomatic branch)

40
Q

zygomaticus minor muscle attachment

A

anterior aspect of the zygomatic bone and angle downward and medially to insert into the skin of the upper lip

41
Q

zygomaticus minor muscle action

A

assists in elevation of the upper lip

42
Q

zygomaticus minor muscle innervation

A

buccal branch of facial nerve

43
Q

risorius muscle attachment

A

arises from parotid and mesenteric fascia and buccal skin and inserts transversely into the angle of the mouth

44
Q

risorius muscle action

A

retracts the angle of the mouth posteriorly

45
Q

risorius muscle innervation

A

mandibular and or buccal branch of facial nerve

46
Q

levator labii superioris muscle attachment

A

originates form inferior orbital margin and inserts into the upper lip

47
Q

levator labii superioris muscle action

A

raise the upper lip

48
Q

levator labii superioris muscle innervation

A

buccal branch of facial nerve

49
Q

depressor labii inferioris muscle attachment

A

arises from the lowest portion of the oblique line of the mandible and inserts into the skin of the lower lip

50
Q

depressor labii infirioris muscle action

A

depresses the lower lip

51
Q

depressor labii inferioris muscle innervation

A

marginal mandibular branch of the facial nerve

52
Q

orbicularis oculi muscle attachments

A

originates form medial orbital margin and lacrimal bone and inserts into skin around orbit

53
Q

orbicularis oculi muscle innervation

A

temporal and zygomatic branches of the facial nerve

54
Q

orbicularis oculi muscle (palperal portion) action

A

blinking

55
Q

orbicularis oculi muscle (orbital portion) action

A

forceful closing

56
Q

corrugator supercilli muscle attachments

A
  • medial end of superciliary arch

- skin overlying the superciliary arch and supraorbital margin

57
Q

corrugator supercilli muscle action

A

draws eyebrows medially and inferiorly

58
Q

corrugator supercilli muscle innervation

A

temporal branch of the facial nerve

59
Q

mentalis muscle attachments

A
  • body of mandible anterior to the roots of inferior incisors
  • skin of chin
60
Q

mentalis muscle action

A

elvates and protrudes lower lip

61
Q

mentalis muscle innervation

A

marginal mandibular branch of facial nerve

62
Q

nasal muscles

levator labi superioris alaeque nasii and alar part of nasalis attachments

A
  • frontal process of maxilla

- alar cartilage

63
Q

nasal muscles

levator labi superioris alaeque nasii and alar part of nasalis action

A

depresses ala laterally (dilates nasal aperture)

64
Q

nasal muscles

levator labi superioris alaeque nasii and alar part of nasalis innervation

A

buccal branch of facial nerve

65
Q

nasal muscles

procerus and transverse part of nasalis attachment

A
  • fascia on dorm of nose and lateral nasal cartilage

- skin of interior forehead between brows

66
Q

nasal muscles

procerus and transverse part of nasalis action

A

depresses medial end of brow, wrinkles skin on dorm of nose

67
Q

nasal muscles

procerus and transverse part of nasalis innervation

A

buccal branch of facial nerve

68
Q

muscles of the mouth, lips, and cheeks

A

-orbicularis oris
-buccinator
-levator anguli oris
-depressor anguli oris
-zygomaticus major
zgomaticus minor
-risorius
-levator labii superioris
depressor labii inferioris

69
Q

muscles of the eye, forehead

A
  • orbicularis oculi

- corrugator supercilli

70
Q

muscles of the chin and nose

A
  • mentalis

- nasal muscles

71
Q

cervicofacial trunk gives rise to

A

buccal branch
mandibular branch
cervical branch

AS II Module 4 (4 decks)

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