Download - Facial muscles
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Facial Muscles
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TriangularisPosition-Corner of the lower
lip, extends over the chin
Action -Pulls the corners of
the chin down
Expression
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TemporalisPosition- Runs down the side
of the face towards the upper jaw
Action - Aids raising and
lowering the jaw when chewing
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FrontalisPosition- Upper part of the
cranium-forehead
Action - Moves the scalp
forward and raises eyebrows - surprise
Expression
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ZygomaticusPosition- Runs down the
cheek towards the corner of the mouth
Action Pulls the corner of
the mouth upwards and sideways as in smiling Expressi
on
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CorrugatorPositionMedial end of the
eyebrow
ActionDraws the eyebrows
down and together as in frowning
Expression
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Orbicularis occuliPositionSphincter muscle
surrounding the eye orbit.
ActionOpen and close the
eye as in winking and blinking
Expression
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Orbicularis OrisPositionA sphincter muscle
surrounding the mouth
ActionCloses and opens
the mouth
Expression
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BuccinatorPositionRun through the
angle of the cheek to the corners of the mouth
ActionCompresses food in
the cheeks when eating and allows the blowing action
Expression
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RisoriusPositionCorners of the
mouth above the Buccinator muscle
ActionPulls the corner of
the mouth upwards and sideways as in grinning
Expression
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MasseterPositionRun down the face to
the angle of the jaw
ActionLifts, lowers and
closes the jaw aiding mastication by exerting pressure on teeth Expression
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Depressor labii inferiorePositionUnderside of the
lower lip, either side of the mentalis muscle
ActionTo depress the lower
lip
Expression
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PlatysmaPositionFront and side of the
neck, down to the clavicle
ActionDepresses lower jaw
and lip wrinkling skin tissue on neck
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MentalisPositionAttached to the
lower jaw and the lower lip at the point of the chin
ActionLifts and wrinkles
the chin turns lower lip outwards as in pouting
Expression
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NasalisPositionOver the front of the
nose
ActionCompresses and
dilates the nostril openings causing wrinkling
Expression
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ProcerusPositionTop of the nose
between the eyebrows
ActionDepresses the
eyebrows and forms wrinkles over the bridge of the nose
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Quadratus labii SuperiorePositionRuns upwards from
upper lip in four separate groups
ActionLifts the upper lip
and helps open the mouth
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Sternocleido MastoidPositionEither side of the neck
to sternum and clavicle
ActionIndividually rotates the
head to one side, pulls head down to shoulder and together pulls the chin onto the chest
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Pectoralis majorPosition Front of the chest, under the breast.
Action Pulls the arm forward and assists with rotation
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DeltoidPositionCaps the shoulder
Action Raises the arm to the side,Pulls it back and forward again
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Occipitalis
PositionAt the back of the skull
ActionHelps with movement of the head
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TrapeziusPositionUpper back and sides of neck
ActionRotation of shoulders, draws back scapula ie, braces shoulders, pull head back