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7/27/2019 KD 02 - Facial Muscles
1/3
Muscle Origin Insertion Innervation Function
Orbital
Group
Orbicularis
oculi
Palpebral part- Medialpalpebral ligament; Orbital
part- Nasal part of frontal
bone, frontal process of
maxilla, medial palpebral
ligament
Palpebral part- Lateral
palpebral raphe; Orbital part-
Fibers form an uninterrupted
ellipse around orbit
Facial Nerve
(VII)
Closes the eyelid gently or
forcefully
Corrugator
supercilli
Medial end of the superciliary
arch
Skin on the medial half of
eyebrow
Facial Nerve
(VII)
Draws the eyebrows medially
and downward
Nasal
Group
Nasalis
Transverse part- Maxilla just
lateral to nose; Alar part-
Maxilla over lateral incisor
Transverse part- Aponeurosis
across dorsum of nose with
muscle fibers from the other
side; Alar part- Alar cartilage
of nose
Facial Nerve
(VII)
Compresses nasal aperture;
Draws cartilage downward
and laterally opens nostril
ProcerusNasal bone and upper part of
lateral nasal cartilage
Skin of lower forehead
between eyebrows
Facial Nerve
(VII)
Draws down medial angle of
eyebrows producing
transverse wrinkles over
bridge of nose
Depressorsepti Maxilla above medial incisor Mobile part of the nasalseptum Facial Nerve(VII) Pulls nose inferiorly
Oral Group
Depressor
anguli oris
Oblique line of mandible
below canine, premolar and
first molar teeth
Skin at the corner of mouth
and blending with orbicularis
oris
Facial Nerve
(VII)
Draws corner of mouth down
and laterally
Depressor
labii
inferioris
Anterior part of oblique line of
mandible
Lower lip at midline, blends
with muscle from opposite
side
Facial Nerve
(VII)
Draws lower lip downward
and laterally
7/27/2019 KD 02 - Facial Muscles
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MentalisMandible inferior to incisor
teethSkin of chin
Facial Nerve
(VII)
Raises and protrudes lower lip
as it wrinkles skin on chin
Risorius Fascia over masseter muscle Skin at the corner of mouthFacial Nerve
(VII)Retracts corner of mouth
Zygomaticu
s major
Posterior part of lateral
surface of zygomatic boneSkin at the corner of mouth
Facial Nerve
(VII)
Draws the corner of the
mouth upward and laterally
Zygomaticu
s minor
Anterior part of lateral surface
of zygomatic bone
Upper lip just medial to
corner of mouth
Facial Nerve
(VII)Draws the upper lip upward
Levator
labii
superioris
Infra-orbital margin of maxillaSkin of upper lateral half of
upper lip
Facial Nerve
(VII)
Raises upper lip, helps form
nasolabial furrow
Levator
labii
superiorisalaeque
nasi
Frontal process of maxilla
Alar cartilage of nose and
upper lip
Facial Nerve
(VII)
Raises upper lip and opens
nostril
Levator
anguli oris
Maxilla below infra-orbital
foramenSkin at the corner of mouth
Facial Nerve
(VII)
Raises corner of mouth, helps
form nasolabial furrow
Orbicularis
oris
From muscles in area, maxilla
and mandible in midlineForms ellipse around mouth
Facial Nerve
(VII)Closes lips, protrudes lips
Buccinator
Posterior parts of maxilla and
mandible, pterygomandibular
raphe
Blends with orbiularis oris
and into lips
Facial Nerve
(VII)
Presses the cheek against
teeth, compresses distended
cheeks
Other
Muscle
Groups
Anterior
auricular
Anterior part of temporal
fasciaInto helix of ear
Facial Nerve
(VII)
Draws ear upward and
forward
Superior
auricular
Epicranial aponeurosis on side
of headUpper part of auricle
Facial Nerve
(VII)Elevates ear
Posterior
auricular
Mastoid process of temporal
boneConvexity of concha of ear
Facial Nerve
(VII)
Draws ear upward and
backward
7/27/2019 KD 02 - Facial Muscles
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Occipitofro-
ntalis
Frontal belly- Skin of
eyebrows; Occipital belly-
Lateral part of superior nuchal
line of occipital bone and
mastoid process of temporalbone
Frontal belly- Into galea
aponeurotica; Occipital belly-
Into galea aponeurotica
Facial Nerve
(VII)
Wrinkles forehead, raises
eyebrows; Draws scalp
backward