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Anatomy Unit III > Muscle functions > Flashcards

Muscle functions Flashcards

1
Q

buccinator

A 
compresses cheek
facial n (buccal br)
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2
Q

depressor anguli oris

A 
depresses buccal angle laterally
facial n (marginal mandibular br)
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3
Q

depressor labii inferioris

A 
draws lower lip downward
facial n (marginal mandibular br)
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4
Q

frontalis

A 
protracts scalp or elevates eyebrows and nose
facial n (temporal br)
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5
Q

levator anguli oris

A 
raises angle of mouth
facial n (buccal and zygomatic br)
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6
Q

levator labii superioris

A 
raises and everts upper lip
facial n (buccal and zygomatic br)
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7
Q

mentalis

A 
raises lower lip
facial n (marginal mandibular br)
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8
Q

nasalis

A 
compress (transverse fibers) and widen (alar fibers) nasal aperature
facial n (buccal br)
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9
Q

orbicularis oculi

A 
palpebral sphinchter
facial n (temporal and zygomatic br)
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10
Q

orbicularis oris

A 
oral sphinchter
facial n (buccal and marginal mandibular br)
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11
Q

platysma

A 
wrinkles anterior nuccal skin
facial n (cervical br)
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12
Q

zygomaticus major

A 
raises buccal angle
facial n (buccal and zygomatic br)
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13
Q

inferior oblique

A 
elevation, abduction, extorsion of eye
oculomotor n (inferior ramus)
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14
Q

inferior rectus

A 
depression, adduction, extorsion of eye
oculomotor n (inferior ramus)
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15
Q

lateral rectus

A

abduction of eye

abducens n

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16
Q

levator palpebrae superioris

A 
elevation of upper eyelid
oculomotor n (superior ramus)
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17
Q

medial rectus

A 
adduction of eye
oculomotor n (inferior ramus)
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18
Q

superior oblique

A

abduction, depression, intorsion of eye

trochlear n

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19
Q

superior rectus

A 
elevation, adduction, intorsion of eye
oculomotor n (superior ramus)
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20
Q

masseter

A

elevation, protraction, retraction of mandible

mandibular n

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21
Q

temporalis

A

elevation, retraction of mandible

mandibular n

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22
Q

lateral pterygoid

A

protraction, side to side movement of mandible

mandibular n

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23
Q

medial pterygoid

A

elevation, side to side movement of mandible

mandibular n

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24
Q

anterior digastric

A

depression of mandible, elevation of hyoid

inferior alveolar n (mylohyoid br)

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25
Q

posterior digastric

A

depression of mandible, elevation of hyoid

facial n

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26
Q

geniohyoid

A

elevation, anterior displacement of hyoid, depression of mandible
ventral ramus of C1 via hypoglossal n

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27
Q

longus capitis

A

flexion of head and neck

ventral rami of cervical spinal n

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28
Q

longus colli

A

flexion of neck

ventral rami of cervical spinal n

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29
Q

mylohyoid

A

elevation of the floor of oral cavity

inferior alveolar n (mylohyoid br)

30
Q

omohyoid

A

depression of hyoid

ansa cervicalis

31
Q

scalenus anterior

A

elevation of 1st rib, flexion, rotation of neck

ventral rami of cervical spinal n

32
Q

scalenus medius

A

elevation of 1st rib, lateral flexion of neck

ventral rami of cervical spinal n

33
Q

scalenus posterior

A

elevation of 1st rib

ventral rami of cervical spinal n

34
Q

sternocleidomastoid

A

flexion of head and neck, contralateral rotation of head

accessory n

35
Q

sternohyoid

A

depresses hyoid

ansa cervicalis

36
Q

sternothyroid

A

depression of elevated larynx

ansa cervicalis

37
Q

stylohyoid

A

elevation, retraction of hyoid

facial n

38
Q

thyrohyoid

A

depression of hyoid, elevation to thyroid cartilage

ventral ramus of C1 via hypoglossal n

39
Q

splenius capitis

A

extension, lateral flexion of head

dorsal rami of cervical spinal n

40
Q

splenius cervicis

A

extend neck, ipsilateral rotation

dorsal rami of cervical spinal n

41
Q

longissimus capitis

A

extension, ipsilateral rotation of head

dorsal rami of cervical spinal n

42
Q

semispinalis capitis

A

extension of head

dorsal rami of cervical spinal n

43
Q

semispinalis cervicis

A

extension of neck

dorsal rami of cervical spinal n

44
Q

rectus capitis posterior major

A 
extension of head
suboccipital n (dorsal ramus C1)
45
Q

rectus capitis posterior minor

A 
extension of head
suboccipital n (dorsal ramus C1)
46
Q

obliquus capitis inferior

A 
ipsilateral rotation of head
suboccipital n (dorsal ramus C1)
47
Q

obliquus capitis superior

A 
posterolateral flexion of head
suboccipital n (dorsal ramus C1)
48
Q

genioglossus

A

protrusion of tongue

hypoglossal n

49
Q

hyoglossus

A

depression of tongue

hypoglossal n

50
Q

styloglossus

A

elevation, retraction of tongue

hypoglossal n

51
Q

levator veli palatini

A 
elevates soft palate
vagus n (pharyngeal br)
52
Q

musculus uvulae

A 
aids in palatopharyngeal closure
vagus n (pharyngeal br)
53
Q

palatoglossus

A 
elevation of root of tongue, approx of palatoglossal folds
vagus n (pharyngeal br)
54
Q

palatopharyngeus

A 
elevation of pharynx, approx of palatoglossal folds
vagus n (pharyngeal br)
55
Q

tensor veli palatini

A

unilateral deviation, bilateral tension of soft palate

mandibular n

56
Q

inferior constrictor

A 
general sphinchteric and peristalic action in swallowing
vagus n (pharyngeal plexus), recurrent laryngeal n, external laryngeal n
57
Q

middle constrictor

A 
general sphinchteric and peristalic action in swallowing
vagus n (pharyngeal plexus)
58
Q

superior constrictor

A 
general sphinchteric and peristalic action in swallowing
vagus n (pharyngeal plexus)
59
Q

salpingopharyngeus

A

elevation of superior lateral aspect of pharyngeal wall

vagus n

60
Q

stylopharyngeus

A

elevation of pharyngeal wall

glossopharyngeal n

61
Q

aryepiglotticus

A

closes aryepiglottic folds

recurrent laryngeal n

62
Q

lateral cricoarytenoid

A

closes glottis

recurrent laryngeal n

63
Q

posterior cricoarytenoid

A

opens glottis

recurrent laryngeal n

64
Q

cricothyroid

A

tenses vocal folds

external laryngeal n

65
Q

interarytenoids (transverse and oblique)

A

closes glottis, assists in closing aryepiglottic folds

recurrent laryngeal n

66
Q

thyroarytenoid

A

closes glottis, slackens vocal cords

recurrent laryngeal n

67
Q

thyroepiglotticus

A

widens glottis

recurrent laryngeal n

68
Q

vocalis

A

slackens tenses vocal ligaments for changes in pitch

recurrent laryngeal n

69
Q

stapedius

A

dampens vibrations of the stapes

facial n

70
Q

tensor tympani

A 
dampens movement of the malleus
mandibular n (nerve to medial pterygoid)

Anatomy Unit III (4 decks)

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