Facial + Neck Muscles

Question 1

Buccinator action? origin and insertion?

Answer 1

action = compress cheek
origin = mandible and maxillae
insertion = orbicularis oris

Question 2

depressor anguli oris action?

Answer 2

movers corners of mouth inferiorly and laterally (frowning muscle)

Question 3

depressor labii inferioris action?

Answer 3

moves lower lip inferiorly

Question 4

levator anguli oris action?

Answer 4

movers corners of mouth superiorly and laterally

Question 5

levator labii superioris action?

Answer 5

opens lips, raises and furrows the upper lip (elvis lip snarl)

Question 6

masseter action? origin and insertion?

Answer 6

action = elevates and protracts mandible
origin = zygomatic arch
insertion = ramus and angle of mandible

Question 7

mentalis action?

Answer 7

protrudes lower lip (pouting)

Question 8

nasalis action?

Answer 8

compresses bridge and depresses tip of the nose

Question 9

occipitofrontalis (frontal belly) action?

Answer 9

elevates eyebrows and wrinkles skin on forehead

Question 10

occipitofrontalis (occipital belly) action?

Answer 10

retracts scalp

Question 11

orbicularis oculi action?

Answer 11

closes eye, produces wrinkling, blinking, and squinting

Question 12

orbicularis oris action?

Answer 12

compresses and purses lips (kissing)

Question 13

platysma action?

Answer 13

pulls lower lip inferiorly, tenses skin of neck

Question 14

procerus action?

Answer 14

moves and wrinkles nose

Question 15

risorius action?

Answer 15

moves corners of lips laterally

Question 16

temporalis action? origin and insertion?

Answer 16

action = elevates and retracts mandible
origin = parietal bone
insertion = coronoid process of mandible

Question 17

zygomaticus major action? origin and insertion?

Answer 17

action = elevates corners of mouth (smile)
origin = zygomatic bone
insertion = edge of mouth

Question 18

zygomaticus minor action? origin and insertion?

Answer 18

action = elevates corners of mouth (smile)
origin = zygomatic bone
insertion = superior lip

Question 19

digastric action?

Answer 19

depresses mandible and elevates hyoid bone

Question 20

levator scapulae action?

Answer 20

elevates scapula and rotates scapula inferiorly

Question 21

mylohyoid action? origin and insertion?

Answer 21

action = elevates hyoid bone and elevates floor of mouth
origin = mandible
insertion = hyoid bone

Question 22

omohyoid action? origin and insertion?

Answer 22

action = depresses hyoid
origin = scapula
insertion = hyoid bone

Question 23

scalenus anterior action?

Answer 23

flexes neck, elevates ribs during forced inspiration

Question 24

scalenus medius action?

Answer 24

flexes neck, elevates ribs during forced inspiration

Question 25

scalenus posterior action?

Answer 25

flexes neck, elevates ribs during forced inspiration

Question 26

splenius capitis action?

Answer 26

extends neck and rotates head

Question 27

sternocleidomastoid (clavicular head) action? origin and insertion?

Answer 27

action = flexes neck, lateral flexion and rotation of the neck
origin = clavicle
insertion = mastoid process of the temporal bone and occipital bone

Question 28

sternocleidomastoid (sternal head) action? origin and insertion?

Answer 28

action = flexes neck, lateral flexion and rotation of the neck
origin = manubrium of sternum
insertion = mastoid process of the temporal bone and occipital bone

Question 29

sternohyoid action? origin and insertion?

Answer 29

action = depresses hyoid bone
origin = manubrium of sternum and clavicle
insertion = hyoid bone

Question 30

thyrohyoid action?

Answer 30

depresses hyoid bone and elevates larynx

Question 31

superior rectus action? origin and insertion?

Answer 31

action = looks superiorly
origin = sphenoid
insertion = superior region of eye

Question 32

inferior rectus action? origin and insertion?

Answer 32

action = looks inferiorly
origin = sphenoid
insertion = inferior region of eye

Question 33

medial rectus action? origin and insertion?

Answer 33

action = looks medially
origin = sphenoid
insertion = medial region of eye

Question 34

lateral rectus action? origin and insertion?

Answer 34

action = looks laterally
origin = sphenoid
insertion = lateral region of eye

Question 35

superior oblique action? origin and insertion?

Answer 35

action = looks inferiorly and laterally, top of eye rotates medially
origin = sphenoid
insertion = lateral region of eye

Question 36

inferior oblique action? origin and insertion?

Answer 36

action = looks superiorly and laterally , bottom of eye rotates medially
origin = maxilla
insertion = lateral region of eye

Question 37

genioglossus action?

Answer 37

protracts tongue

Question 38

hypoglossus action?

Answer 38

depresses and retracts tongue

Question 39

palatoglossus action?

Answer 39

elevates tongue

Question 40

styloglossus action?

Answer 40

elevates and retracts tongue

Question 41

superior pharyngeal constrictor action?

Answer 41

constricts pharynx

Question 42

middle pharyngeal constrictor action?

Answer 42

constricts pharynx

Question 43

inferior pharyngeal constrictor action?

Answer 43

constricts pharynx

Question 44

levator veli palatini action?

Answer 44

elevates soft palate when swallowing

Question 45

tensor veli palatini action?

Answer 45

tenses soft palate when swallowing