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Anatomy Head & Face > Muscles > Flashcards

Muscles Flashcards

0
Q

Occipitofrontalis action

A

Raise eyebrows and wrinkle forehead

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1
Q

Orbicularis oculi action

A

Close eyelids and winking

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2
Q

Corrugator supercili action

A

Draws eyebrows medially and inferiorly, creating Vertical wrinkles above nose

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3
Q

Nasalis action

A

Compress bridge, depresses tip of nose, elevates corners of nostrils. “Flaring”

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4
Q

Orbicularis oris action

A

Puckering of the lips for kissing and blowing

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5
Q

Levator labii superioris action

A

Elevates the upper lip for elevation; shows sadness (deepening of nasolabial sulcus

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6
Q

levator labii superioris alaeque nasi action

A

Dilates the nostrils and elevates the upper lip

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7
Q

Procerus action

A

Draws down medial angle of eyebrow for frowning expressions

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8
Q

Zygomaticus major action

A

Shows expressions of happiness and sneering (disdain)

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9
Q

Zygomaticus minor action

A

Expressions of sadness via nasolabial sulcus deepening

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10
Q

Buccinator action

A

Resists dissension when blowing, presses cheek against molars to keep food in mouth

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11
Q

Levator anguli oris action

A

Part of dilators of mouth; widens oral fissure when grinning or grimacing

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12
Q

Risorius action

A

Dilator of mouth; depresses labial commisure to frown

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13
Q

Depressor anguli oris action

A

Dilator of mouth; depresses labial commisure to frown

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14
Q

Depressor labii inferioris action

A

Dilator of mouth; depresses lower lip (pouting, sadness)

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15
Q

Mentalis action

A

Elevates and protrudes lower lip; elevates skin of shin (showing doubt)

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16
Q

Platysma action

A

Depresses mandible; tenses skin of inferior face and neck (conveys stress and tension)

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17
Q

Levator Palpebrae Superioris Innervation

A

Occulomotor (CN III); deep layer (superior tarsal muscle) is supplied by sympathetic fibers

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18
Q

Levator Palpebrae Superioris action

A

elevates superior eyelid

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19
Q

Superior Oblique innervation

A

Trochlear Nerve (CN IV)

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20
Q

Superior Oblique action

A

abducts, depresses and medially rotates eyeball

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21
Q

Inferior Oblique Innervation

A

Oculomotor Nerve (CN III)

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22
Q

Inferior Oblique Action

A

Abducts, elevates and laterally rotates eyeball

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23
Q

Superior Rectus innervation

A

Oculomotor Nerve (CNIII)

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24
Superior Rectus Action
Elevates adducts, and medially rotates eyeball
25
Inferior Rectus innervation
Oculomotor Nerve (CN III)
26
Inferior Rectus action
depresses, adducts and laterally rotates eyeball
27
Medial Rectus innervation
Oculomotor Nerve (CN III)
28
Medial Rectus action
Adducts eyeball
29
Lateral Rectus innervation
Abducent Nerve (CN VI)
30
Lateral Rectus action
abducts eyeball
31
Temporalis innervation
Anterior trunk of mandibular nerve (CN V3)
32
Temporalis action
elevates mandible, closes jaws, posterior, more horizontal fibers are 1° retractors of mandible.
33
Masseter innervation
anterior trunk of mandibular nerve (CN V3)
34
Masseter action
elevates mandible, closes jaws, superficial fibers make limited contribution to protrusion of mandible
35
Lateral Pterygoid innervation
Anterior trunk of mandibular nerve (CN V3)
36
Lateral Pterygoid action
acting bilaterally, protracts mandible and depresses chin; acting unilaterally, swings jaw toward contralateral side; alternate unilateral contraction produces larger lateral chewing movements
37
Medial Pterygoid innervation
anterior trunk of mandibular nerve (CN V3) via medial pterygoid nerve
38
Medial Pterygoid action
acts synergistically with masseter to elevate mandible; contributes to protrusion; produces small grinding movements.
39
Digastric innervation
facial and mandibular nerves
40
Digastric action
depresses mandible against resistance when infrahyoid muscles fix or depress hyoid.
41
stylohyoid innervation
facial nerve
42
Mylohyoid innervation
mandibular nerve
43
Mylohyoid action
depresses mandible against resistance when infrahyoid muscles fix or depress hyoid bone
44
Geniohyoid innervation
nerve to geniohyoid (C1-C2)
45
Geniohyoid action
depresses mandible against resistance when infrahyoid muscles fix or depress hyoid bone.
46
Omohyoid Innervation
Ansa Cervicalis from cervical plexus (C1-C3)
47
Omohyoid action
fixes or depresses hyoid bone
48
Sternohyoid innervation
Ansa cervicalis from cervical plexus (C1-C3)
49
Sternohyoid action
fixes or depresses hyoid
50
Sternothyroid innervation
Ansa cervicalis from cervical plexus (C1-C3)
51
Sternothyroid action
fixes or depresses hyoid bone
52
Thyrohyoid innervation
C1 (via hypoglossal n. CN XII)
53
Thyrohyoid action
fixes or depresses hyoid bone
54
Platysma innervation
Cervical branch of facial nerve (CN VII)
55
Platysma action
depresses mandible against resistance
56
Tensor veli palatini innervation
Medial pterygoid nerve (a branch of mandibular nerve, CN V3) via otic ganglion
57
Tensor veli palatini action
tenses soft palate and opens mouth of pharyngotympanic tube during swallowing and yawning
58
Levator veli palatini innervation
Pharyngeal branch of vagus nerve (CN X) via pharyngeal plexus
59
Levator veli palatini action
elevates soft palate during swallowing and yawning
60
Palatoglossus innervation
Pharyngeal branch of vagus nerve (CN X) via pharyngeal plexus
61
Palatoglossus action
elevates posterior part of tongue and draws soft palate onto tongue
62
Palatopharyngeus innervation
Pharyngeal branch of vagus nerve (CN X) via pharyngeal plexus
63
Palatopharyngeus action
tenses soft palate and pulls walls of pharynx superiorly, anteriorly and medially during swallowing
64
Musculus uvulae innervation
pharyngeal branch of vagus nerve (CN X) via pharyngeal plexus
65
Hyoglossus action
depresses tongue, especially pulling its side inferiorly, helps shorten tongue.
66
Styloglossus action
retrudes tongue and curls its sides, working with genioglossus to form a central trough during swallowing.
67
SCM innervation
Spinal Accessory nerve (CN XI,motor); C2 and C3 nerves (pain and proprioception)
68
SCM action
Tilts head towards opposite side; flexes cervical vertebra so chin draws down towards manubrium
69
Longus Colli innervation
anterior rami of C2-C6 spinal nerves
70
Longus Colli action
flexes neck with rotation to opposite side if acting unilaterally
71
Longus Capitis innervation
anterior rami of C1-C3 spinal nerves
72
Longus Capitis action
flexes the head
73
Rectus capitis lateralis innervation
branches from loop between C1 and C2 spinal nerves
74
Rectus capitis lateralis action
flexes and stabilizes head
75
Scalenus Medius innervation
anterior rami of cervical spinal nerves
76
Scalenus Medius action
lateral neck flexion and elevation of 1st rib during forced inspiration
77
Scalenus Posterior innervation
Anterior rami of cervical spinal nerves C7 & C8
78
Scalenus Posterior action
Lateral neck flexion and elevation of 2nd rib during forced inspiration
79
Scalenus Anterior innervation
cervical spinal nerves C4-C6
80
Scalenus Anterior action
flexes head

Anatomy Head & Face (1 decks)

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