Head and Neck Muscles - innervation and action Flashcards

1
Q

frontal belly of occipitofrontalis

A

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

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2
Q

occipital belly of occipitofrontalis

A

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

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3
Q

orbicularis oculi

A

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

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4
Q

orbicularis oris

A

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

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5
Q

buccinator

A

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

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6
Q

platysma

A

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

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7
Q

levator palpebrae superioris

A

N: occulomotor and a little SyA: raises upper eyelid

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8
Q

tensor veli palatini

A

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

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9
Q

superior pharyngeal constrictor

A

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

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10
Q

middle pharyngeal constrictor

A

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

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11
Q

inferior pharyngeal constrictor

A

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

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12
Q

stylopharyngeus

A

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

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13
Q

sternocleidomastoid

A

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

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14
Q

temporalis

A

N: mandibular division of trigeminalA: elevate and retract mandible

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15
Q

masseter

A

N: mandibular division of trigeminalA: elevates mandible

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16
Q

medial pterygoid

A

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

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17
Q

lateral pterygoid

A

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

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18
Q

mylohyoid

A

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

19
Q

geniohyoid

A

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

20
Q

genioglossus

A

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

21
Q

hyoglossus

A

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

22
Q

styloglossus

A

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

23
Q

levator veli palatini

A

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

24
Q

sternothyroid

A

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

25
Q

omohyoid

A

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

26
Q

thyrohyoid

A

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

27
Q

cricothyroid

A

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

28
Q

stylohyoid

A

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

29
Q

digastric

A

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
Q

oblique and transverse arytenoids

A

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

31
Q

posterior, lateral, crico-arytenoids

A

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

32
Q

anterior scalene

A

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

33
Q

middle scalene

A

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

34
Q

posterior scalene

A

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

35
Q

longus capitis

A

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

36
Q

longus colli

A

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
Q

splenius capitis

A

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
Q

levator scapulae

A

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
Q

palatoglossus

A

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

40
Q

palatopharyngeus

A

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

41
Q

uvular

A

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

42
Q

salpingopharyngeus

A

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

43
Q

vocalis

A

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