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Anatomy > Muscles of HNS function > Flashcards

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
Q

anterior part of temporalis

A

anterior fibres elevates mandibles

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26
Q

posterior part of temporalis

A

posterior part retracts mandible

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27
Q

masseter

A

elevates (forced closure of mouth) and protrudes mandible

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28
Q

levator palpebrae superioris

A

elevates superior eyelid (look up/shock)

29
Q

lateral rectus

A

abducts eyeball

30
Q

medial rectus

A

adducts eyeball

31
Q

superior rectus

A

-elevates
-adducts
-internally rotates
the eyeball

32
Q

inferior tectus

A

-depresses
-adducts
-externall rotates eyeball

33
Q

inferior oblique

A

-abducts
-elevates
-externally rotates eyeballs

34
Q

superior oblique

A

-abducts
-depresses
-internally rotates eyeballs (make diagram)

35
Q

superior longitunial muscle

A

-retracts and broadns tongue
-elevates apex of tongue

36
Q

inferior longituinal muscle

A

-retracts and broadens tongue
-lowers apex of tongue

37
Q

transverse muscle

A

narrows and elongates tongue

38
Q

vertical muscle

A

broadens and elongates tongue

39
Q

intrinsic muscles of tongue

A

-superior + inferior longitudinal
-transverse
-vertical

40
Q

extrinsic tongue muscles

A

-genioglossus
-hypoglossus
-styloglossus
-palatoglossus

41
Q

genioglossus

A

-bilateral contraction (depressing and protruding tongue)
-unilateral contraction (deviate tongue contralaterally)

42
Q

hypoglossus

A

depresses and retracts tongue

43
Q

styloglossus

A

retracts and elevates lateral aspects of tongue

44
Q

palatoglossus

A

-elevates root of tongue
-constricts isthmus of fauces

45
Q

palatopharyngeus

A

-elevates pharynx superiorly, anteriorly and medially (shortening it to swallow)

46
Q

saplingopharyngeys

A

-elevates pharynx
-opens auditory tube during swallowing

47
Q

stylopharyngeus

A

elevates pharynx and larync

48
Q

levator veli palatini

A

elevates soft palate (during swallowing)

49
Q

tensor veli palatini

A

-tenses palatine aponeurorsis
-opens pharyngeal opening of auditory tube (during swallowing)

50
Q

cricothyroid

A

-draws thyroid cartilage anetoinferiorly
-lengthens and tenses vocal ligament to change pitch

51
Q

posterior cricoarytenoid

A

-abducts and lengthens vocal folds
-open glottis

52
Q

lateral cricoarytenouds

A

adducts and shortens vocal folds

53
Q

vocalis muscle

A

-relaxes posterior vocal ligament
-maintains tension or anterior vocal ligament

54
Q

transverse and oblique arytenoid + aryepiglottic muscle

A

-adducts arytenoid cartilages
-acts as a sphincter on laryngeal inlet

55
Q

thyroarytenoid

A

-draws arytenoid cartilages anteriorly
-relaxes vocal ligament for low pitch sound

56
Q

mylohyoid

A

-forms floor of oral cavity
-elevates hyoid bone and floor of mouth
-depresses mandible

57
Q

geniohyoid

A

elevates and draws hyoid bone anteriorly

58
Q

stylohyoid

A

elevates and draws hyoid bone posteriorly

59
Q

digastric

A

-depresses madible
-elevates hyoid bone during swallowing and speaking

60
Q

sternothyroid

A

depresses larynx

61
Q

sternohyoid

A

depresses hyoid bone from elevated position

62
Q

omohyoid

A

depresses and draws hyoid boen posteriorly

63
Q

thyrohyoid

A

-depresses hyoid bone
-elevates larynx

64
Q

scalenus anterior

A

-bilateral contraction: next flexion
-unilateral contraction: neck lateral flexion (ipsilateral), neck rotation (contralateral)
-elevates ribs 1 (w/ scalenus medius)

65
Q

scalenus medius

A

-neck lateral flexion
-elevates rib 1

66
Q

scalenus posterior

A

-neck lateral flexion
-elevates ribs 2

67
Q

rectus capitis anterior

A

-antlantooccipital joint: head flexion

68
Q

platysma

A

-depresses mandible and angle of mouth
-tenses skin of lower face and anterior neck

69
Q

sternocleidomastoid

A

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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