Head and Neck Muscles - innervation and action Flashcards Preview

Head and Neck Anatomy Practice Questions > Head and Neck Muscles - innervation and action > Flashcards

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