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Muscles of HNS function Flashcards

1
Q

occipitofrontalis muscle function

A

frontal belly: elevates eyebrows + wrinkles skin of forehead

occioital belly: retracts scalp (head backwards)

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2
Q

temporoparietalis muscle function (oblique to superior auricular muscle)

A

-tenses fascia of temproal region
-assists with movement of auricle

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3
Q

function of auricularis muscles

A

anterior: draws auricular anteriorly
posterior->
superior->

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4
Q

orbital part of orbicularis oculi function

A

closes eyelids tightly

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5
Q

palpebral part of orbicularis oculi function

A

closes eyelids gently

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6
Q

lacrimal part of orbicularis oculi function

A

compresses lacrimal sac

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7
Q

function of corrugator supercilli

A

creates vertical wrinkles over glabella

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8
Q

function of depressor supercilli

A

-depresses medial portion of eyebrow
-moves skin of glabella

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9
Q

what is the function of the procerus

A

-depresses medial end of eyebrow
-wrinkles skin of eyebrow

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10
Q

alar part of nasalis

A

-depresses ala laterally
-dilates nostrils

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11
Q

transverse part of nasalis

A

wrinkls skin of dorsum of nose

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12
Q

levator labii superioris alaeque nasi

A

elevates and everts upper lip and nasal ala

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13
Q

orbicularis oris

A

-closes mouth
-compresses and protrudes lips

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14
Q

buccinator

A

compresses cheeks against molar teeth

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15
Q

zygomaticus major

A

elevates and everts angle of mouth

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16
Q

zygomaticus minor

A

-elevates upper lip
-exposes maxillary teeth

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17
Q

levator labii superioris

A

-elevates and everts upper lip
-exposes maxillary teeth

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18
Q

risorius

A

extends angle of mouth laterally

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19
Q

levator anguli oris

A

elevatese angle of mouth

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20
Q

depressor anguli oris

A

depresses angle of mouth

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21
Q

depressor labii inferioris

A

depresses lower lip inferolaterally

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22
Q

mentalis

A

-elevates, everts and protrudes lower lip
-wrinkle skin of chin

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23
Q

stapedius

A

III
small muscle of ear that dampens vibrations passed to cochlea via oval window

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24
Q

tensor tympani

A

V3
-pulls handle of malleus (mall bone in the middle ear which transmits vibrations of the eardrum to the incus) medially
-tenses tympanic membrane

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25
anterior part of temporalis
anterior fibres elevates mandibles
26
posterior part of temporalis
posterior part retracts mandible
27
masseter
elevates (forced closure of mouth) and protrudes mandible
28
levator palpebrae superioris
elevates superior eyelid (look up/shock)
29
lateral rectus
abducts eyeball
30
medial rectus
adducts eyeball
31
superior rectus
-elevates -adducts -internally rotates the eyeball
32
inferior tectus
-depresses -adducts -externall rotates eyeball
33
inferior oblique
-abducts -elevates -externally rotates eyeballs
34
superior oblique
-abducts -depresses -internally rotates eyeballs (make diagram)
35
superior longitunial muscle
-retracts and broadns tongue -elevates apex of tongue
36
inferior longituinal muscle
-retracts and broadens tongue -lowers apex of tongue
37
transverse muscle
narrows and elongates tongue
38
vertical muscle
broadens and elongates tongue
39
intrinsic muscles of tongue
-superior + inferior longitudinal -transverse -vertical
40
extrinsic tongue muscles
-genioglossus -hypoglossus -styloglossus -palatoglossus
41
genioglossus
-bilateral contraction (depressing and protruding tongue) -unilateral contraction (deviate tongue contralaterally)
42
hypoglossus
depresses and retracts tongue
43
styloglossus
retracts and elevates lateral aspects of tongue
44
palatoglossus
-elevates root of tongue -constricts isthmus of fauces
45
palatopharyngeus
-elevates pharynx superiorly, anteriorly and medially (shortening it to swallow)
46
saplingopharyngeys
-elevates pharynx -opens auditory tube during swallowing
47
stylopharyngeus
elevates pharynx and larync
48
levator veli palatini
elevates soft palate (during swallowing)
49
tensor veli palatini
-tenses palatine aponeurorsis -opens pharyngeal opening of auditory tube (during swallowing)
50
cricothyroid
-draws thyroid cartilage anetoinferiorly -lengthens and tenses vocal ligament to change pitch
51
posterior cricoarytenoid
-abducts and lengthens vocal folds -open glottis
52
lateral cricoarytenouds
adducts and shortens vocal folds
53
vocalis muscle
-relaxes posterior vocal ligament -maintains tension or anterior vocal ligament
54
transverse and oblique arytenoid + aryepiglottic muscle
-adducts arytenoid cartilages -acts as a sphincter on laryngeal inlet
55
thyroarytenoid
-draws arytenoid cartilages anteriorly -relaxes vocal ligament for low pitch sound
56
mylohyoid
-forms floor of oral cavity -elevates hyoid bone and floor of mouth -depresses mandible
57
geniohyoid
elevates and draws hyoid bone anteriorly
58
stylohyoid
elevates and draws hyoid bone posteriorly
59
digastric
-depresses madible -elevates hyoid bone during swallowing and speaking
60
sternothyroid
depresses larynx
61
sternohyoid
depresses hyoid bone from elevated position
62
omohyoid
depresses and draws hyoid boen posteriorly
63
thyrohyoid
-depresses hyoid bone -elevates larynx
64
scalenus anterior
-bilateral contraction: next flexion -unilateral contraction: neck lateral flexion (ipsilateral), neck rotation (contralateral) -elevates ribs 1 (w/ scalenus medius)
65
scalenus medius
-neck lateral flexion -elevates rib 1
66
scalenus posterior
-neck lateral flexion -elevates ribs 2
67
rectus capitis anterior
-antlantooccipital joint: head flexion
68
platysma
-depresses mandible and angle of mouth -tenses skin of lower face and anterior neck
69
sternocleidomastoid
bilateral contraction-atlantoocipital joint/superior cervical spine: head/neck extension -inferior cervical vertebrae: neck flexion -sternoclavicular joint: elevation of clavicle and manubrium of sternum -unilateral contraction-cervical spine: neck ipsilateral flexion -neck controlateral rotation

Anatomy (10 decks)

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