Head and Neck Muscles - innervation and action Flashcards Preview

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Flashcards in Head and Neck Muscles - innervation and action Deck (43):
1

frontal belly of occipitofrontalis

N: terminal branches of facial nerve, temporal branchA: elevate eyebrows, wrinkle forehead

2

occipital belly of occipitofrontalis

N: terminal branches of facial neve, temporal branch A: draw scalp back

3

orbicularis oculi

N: terminal branches of facial nerve, mostly zygomatic branchA: close eyelids. paplpebral part does blinking, orbital is more forceful

4

orbicularis oris

N: terminal branches of facial nerve, mostly mandibular branchA: close lips; pull lips toward teeth or pucker up

5

buccinator

N: terminal branches of facial nerve, buccal branchA: presses cheek against tooth to keep food in mouth

6

platysma

N: terminal branches of facial nerve, cervial branchA: pulls mouth out and down; can wrinkle the skin of neck

7

levator palpebrae superioris

N: occulomotor and a little SyA: raises upper eyelid

8

tensor veli palatini

N: Mandibular division of trigeminal
A: ascending palatine a (facial); descending palatine a (maxillary)

9

superior pharyngeal constrictor

N: pharyngeal plexus of vagus
A: ascending pharyngeal artery; ascending palatine and tonsillar branches (facial); dorsal branches of lingual a.

10

middle pharyngeal constrictor

N: pharyngeal plexus of the vagus
A: ascending pharyngeal artery; ascending palatine and tonsillar branches (facial); dorsal branches of lingual a

11

inferior pharyngeal constrictor

N: pharyngeal plexus of the vagus
A: ascending pharyngeal artery; branches of superior thyroid a

12

stylopharyngeus

N: glossopharyngeal (IX)
A: ascending pharyngeal artery; ascending palatine and tonsillar branches (facial); dorsal branches of lingual a

13

sternocleidomastoid

N: accessory nerve (CN XI and C2-3)A: tilts, flexes, and rotates the head/neck

14

temporalis

N: mandibular division of trigeminalA: elevate and retract mandible

15

masseter

N: mandibular division of trigeminalA: elevates mandible

16

medial pterygoid

N: mandibular division of trigeminalA: elevates mandible; protrudes mandible to opposite side with help from laterial pterygoid on same side

17

lateral pterygoid

N: mandibular division of trigeminalA: oens mouth; protrudes mandible to opposite side with help from laterial pterygoid on same side

18

mylohyoid

N: nerve to mylohyoid from the mandibular div. of trigeminalA: elevates hyoid, raises floor of mouth during swallowing etc.

19

geniohyoid

N: C1 via hypoglossal nerve (CN XII)A: elevates and pulls hyoid forward; helps depress mandible

20

genioglossus

N: hypoglossal n. (CN XII)
A: sublingual and submental aa

21

hyoglossus

N: hypoglossal n. (CN XII)
A: sublingual and submental aa.

22

styloglossus

N: hypoglossal n. (CN XII)
A: sublingual a

23

levator veli palatini

N: vagus nerve
A: ascending palatine a (facial); descending palatine a

24

sternothyroid

N: C2-3 from ansa cervicalisA: depresses larynx after it has been elevated for swallowing

25

omohyoid

N: C1-3 from ansa cervicalisA: depresses hyoid after it has been elevate; retracts and steadies hyoid

26

thyrohyoid

N: C1 via hypoglossal n. (CN XII)A: depresses hyoid and draws the thyroid cartilage superiorly

27

cricothyroid

N: external branch of superior laryngeal nerve from vagus
A: sup, inferior thyroid aa

28

stylohyoid

N: facial nerveA: elevates and retracts hyoid to elongate the floor of the mouth

29

digastric

N: anterior belly is nerve to mylohyoid (trigeminal) posterior belly is facial nerveA: elevates hyoid bone and helps to depress the mandible to open the mouth

30

oblique and transverse arytenoids

N: recurrent laryngeal of vagus
A: sup. inf. thyroid aa

31

posterior, lateral, crico-arytenoids

N: recurrent laryngeal (vagus)
A: sup. and inf. thyroid aa

32

anterior scalene

O: anterior tubercles of C3-6 to the scalene tubercle of rib 1N: C5-7 ventral rami

33

middle scalene

O: posterior tubercles of C2-7 to the superior surface of rib 2N: C3-8 ventral rami

34

posterior scalene

O: posterior tubercles of C4-6 to the external border of rib 2N: C6-8 ventral rami

35

longus capitis

O: anterior tubercles of C3-6 to the basilar ortion of the occipital N: C1-3 ventral rami

36

longus colli

O: bodies of T1-3, C4-7, and transverse processes of C3-6 to atlas, bodies of C2-4 and transverse processes of C5-6N: C2-6 ventral rami

37

splenius capitis

O: ligamentum nuchae and spinous processes of C7-T6 to the mastoid process of temporal bone, lateral third of the superior nucal line of the occipital boneN: dorsal rami of middle cervical spinal nerves

38

levator scapulae

O: transverse processes of first 4 cervical vert. to the superior part of the scapulaN: C3-4 from the cervical plexus and a branch from dorsal scapular nerve (brachial plexus)

39

palatoglossus

N: vagus nerve by pharyngeal plexus
A: ascending pharyngeal arteries, palatine branches of facial and maxillary aa

40

palatopharyngeus

N: vagus via pharyngeal plex
A: A: ascending palatine a (facial); descending palatine a (maxillary)

41

uvular

N: vagus via pharyngeal plex
A: A: ascending palatine a (facial); descending palatine a (maxillary)

42

salpingopharyngeus

N: vagus via pharyngeal plex
A: pharyngeal branch of ascending pharyngeal a.

43

vocalis

N: recurrent laryngeal of vagus
A: sup. inf. thyroid aa