Muscle functions Flashcards
1
Q
buccinator
A
compresses cheek facial n (buccal br)
2
Q
depressor anguli oris
A
depresses buccal angle laterally facial n (marginal mandibular br)
3
Q
depressor labii inferioris
A
draws lower lip downward facial n (marginal mandibular br)
4
Q
frontalis
A
protracts scalp or elevates eyebrows and nose facial n (temporal br)
5
Q
levator anguli oris
A
raises angle of mouth facial n (buccal and zygomatic br)
6
Q
levator labii superioris
A
raises and everts upper lip facial n (buccal and zygomatic br)
7
Q
mentalis
A
raises lower lip facial n (marginal mandibular br)
8
Q
nasalis
A
compress (transverse fibers) and widen (alar fibers) nasal aperature facial n (buccal br)
9
Q
orbicularis oculi
A
palpebral sphinchter facial n (temporal and zygomatic br)
10
Q
orbicularis oris
A
oral sphinchter facial n (buccal and marginal mandibular br)
11
Q
platysma
A
wrinkles anterior nuccal skin facial n (cervical br)
12
Q
zygomaticus major
A
raises buccal angle facial n (buccal and zygomatic br)
13
Q
inferior oblique
A
elevation, abduction, extorsion of eye oculomotor n (inferior ramus)
14
Q
inferior rectus
A
depression, adduction, extorsion of eye oculomotor n (inferior ramus)
15
Q
lateral rectus
A
abduction of eye
abducens n
16
Q
levator palpebrae superioris
A
elevation of upper eyelid oculomotor n (superior ramus)
17
Q
medial rectus
A
adduction of eye oculomotor n (inferior ramus)
18
Q
superior oblique
A
abduction, depression, intorsion of eye
trochlear n
19
Q
superior rectus
A
elevation, adduction, intorsion of eye oculomotor n (superior ramus)
20
Q
masseter
A
elevation, protraction, retraction of mandible
mandibular n
21
Q
temporalis
A
elevation, retraction of mandible
mandibular n
22
Q
lateral pterygoid
A
protraction, side to side movement of mandible
mandibular n
23
Q
medial pterygoid
A
elevation, side to side movement of mandible
mandibular n
24
Q
anterior digastric
A
depression of mandible, elevation of hyoid
inferior alveolar n (mylohyoid br)
25
posterior digastric
depression of mandible, elevation of hyoid
| facial n
26
geniohyoid
elevation, anterior displacement of hyoid, depression of mandible
ventral ramus of C1 via hypoglossal n
27
longus capitis
flexion of head and neck
| ventral rami of cervical spinal n
28
longus colli
flexion of neck
| ventral rami of cervical spinal n
29
mylohyoid
elevation of the floor of oral cavity
| inferior alveolar n (mylohyoid br)
30
omohyoid
depression of hyoid
| ansa cervicalis
31
scalenus anterior
elevation of 1st rib, flexion, rotation of neck
| ventral rami of cervical spinal n
32
scalenus medius
elevation of 1st rib, lateral flexion of neck
| ventral rami of cervical spinal n
33
scalenus posterior
elevation of 1st rib
| ventral rami of cervical spinal n
34
sternocleidomastoid
flexion of head and neck, contralateral rotation of head
| accessory n
35
sternohyoid
depresses hyoid
| ansa cervicalis
36
sternothyroid
depression of elevated larynx
| ansa cervicalis
37
stylohyoid
elevation, retraction of hyoid
| facial n
38
thyrohyoid
depression of hyoid, elevation to thyroid cartilage
| ventral ramus of C1 via hypoglossal n
39
splenius capitis
extension, lateral flexion of head
| dorsal rami of cervical spinal n
40
splenius cervicis
extend neck, ipsilateral rotation
| dorsal rami of cervical spinal n
41
longissimus capitis
extension, ipsilateral rotation of head
| dorsal rami of cervical spinal n
42
semispinalis capitis
extension of head
| dorsal rami of cervical spinal n
43
semispinalis cervicis
extension of neck
| dorsal rami of cervical spinal n
44
rectus capitis posterior major
```
extension of head
suboccipital n (dorsal ramus C1)
```
45
rectus capitis posterior minor
```
extension of head
suboccipital n (dorsal ramus C1)
```
46
obliquus capitis inferior
```
ipsilateral rotation of head
suboccipital n (dorsal ramus C1)
```
47
obliquus capitis superior
```
posterolateral flexion of head
suboccipital n (dorsal ramus C1)
```
48
genioglossus
protrusion of tongue
| hypoglossal n
49
hyoglossus
depression of tongue
| hypoglossal n
50
styloglossus
elevation, retraction of tongue
| hypoglossal n
51
levator veli palatini
```
elevates soft palate
vagus n (pharyngeal br)
```
52
musculus uvulae
```
aids in palatopharyngeal closure
vagus n (pharyngeal br)
```
53
palatoglossus
```
elevation of root of tongue, approx of palatoglossal folds
vagus n (pharyngeal br)
```
54
palatopharyngeus
```
elevation of pharynx, approx of palatoglossal folds
vagus n (pharyngeal br)
```
55
tensor veli palatini
unilateral deviation, bilateral tension of soft palate
| mandibular n
56
inferior constrictor
```
general sphinchteric and peristalic action in swallowing
vagus n (pharyngeal plexus), recurrent laryngeal n, external laryngeal n
```
57
middle constrictor
```
general sphinchteric and peristalic action in swallowing
vagus n (pharyngeal plexus)
```
58
superior constrictor
```
general sphinchteric and peristalic action in swallowing
vagus n (pharyngeal plexus)
```
59
salpingopharyngeus
elevation of superior lateral aspect of pharyngeal wall
| vagus n
60
stylopharyngeus
elevation of pharyngeal wall
| glossopharyngeal n
61
aryepiglotticus
closes aryepiglottic folds
| recurrent laryngeal n
62
lateral cricoarytenoid
closes glottis
| recurrent laryngeal n
63
posterior cricoarytenoid
opens glottis
| recurrent laryngeal n
64
cricothyroid
tenses vocal folds
| external laryngeal n
65
interarytenoids (transverse and oblique)
closes glottis, assists in closing aryepiglottic folds
| recurrent laryngeal n
66
thyroarytenoid
closes glottis, slackens vocal cords
| recurrent laryngeal n
67
thyroepiglotticus
widens glottis
| recurrent laryngeal n
68
vocalis
slackens tenses vocal ligaments for changes in pitch
| recurrent laryngeal n
69
stapedius
dampens vibrations of the stapes
| facial n
70
tensor tympani
```
dampens movement of the malleus
mandibular n (nerve to medial pterygoid)
```
