Facial/hyoid Muscles

Front 1

Back 1

Corrugator Supercilii
Produces vertical folds between eyebrows

Front 2

Back 2

Occipitofrontalis
Elevates eyebrows and wrinkles skin of forehead, protracts scalp
Attached to the Galea Aponeurotica

Front 3

Back 3

Orbicularis Occuli
Closes eyelid

Front 4

Back 4

Levator Palpabrae Superioris—exists under the eyelid and raises the eyelid
This muscle is the exception to the facial nerve rule—it is innervated by the occulomotor nerve (cranial nerve #3)

Front 5

Back 5

Nasalis
Compressor portion
Dilator portion
Flares and compresses nostrils

Front 6

Back 6

Procerus
Connects nasalis to frontalis

Front 7

Back 7

Obicularis Oris
Closes mouth

Front 8

Back 8

Buccinator
Presses cheek against molars

Front 9

Back 9

Levator Labii Superioris
Raises upper lip

Front 10

Back 10

Depressor Labii Inferioris
Draws lower lip downward and laterally

Front 11

Back 11

Zygomaticus Major
Smile muscle

Front 12

Back 12

Zygomaticus Minor
Retract or evert upper lip

Front 13

Back 13

Depressor anguli oris
depresses corners of mouth

Front 14

Back 14

Risorius
Pulls corners of mouth laterally
Attached to fascia over parotid gland and angle of mouth

Front 15

Back 15

Temporalis
Elevation and retraction of the mandible
Innervated by the Trigeminal Nerve—cranial nerve V

Front 16

Back 16

Masseter
Elevation of the mandible
Innervated by the Trigeminal Nerve—cranial nerve V

Front 17

Back 17

Lateral Pterygoid—protracts the mandible (pulls the mandible forward from its origin)

Front 18

Back 18

Medial Pterygoid—elevation of the mandible

Front 19

Back 19

Draws the ear anteriorly (Auricularis Anterior)
Elevates the ear (Auricularis Superior)
Draws the ear posteriorly (Auricularis Posterior)
Tightens and moves the scalp (Auricularis Anterior and Superior)

Front 20

Back 20

A: Lateral Temporomandibular Ligament
B: Sphenomandibular Ligament
C: Stylomandibular Ligament

Front 21

Back 21

Stylohyoid
Elevates and retracts hyoid

Front 22

Back 22

Diagastric
Depress mandible against resistance when infrahyoid muscles fix or elevates hyoid bone

Front 23

Back 23

Mylohyoid
Elevates hyoid

Front 24

Back 24

Geniohyoid
Pulls hyoid anterior-superiorly or depresses mandible when hyoid is fixed

Front 25

Back 25

Sternohyoid
Depresses hyoid after elevation during swallowing

Front 26

Back 26

Omohyoid
Depresses, retracts and steadies hyoid

Front 27

Back 27

Thyrohyoid
Depresses hyoid or if hyoid is fixed, elevates thyroid cartilage

Front 28

Back 28

Sternothyroid
Draws larynx downward