Orbital group
Frontalis
Action Raise eyebrows
Draws scalp forward and wrinkles skin of forehead
Origin Galea aponeurotica
Insertion Subcutaneous tissue of eyebrows
Innervation Facial nerve
,Occipitalis
Action Retracts scalp
Fixes galea aponeurotica so frontalis can act on eyebrows
Origin Superior nuchal line and temporal bone
Insertion Galea aponeurotica
Innervation Facial nerve
,Orbicularis oculi
Action • Surround orbital orifice
• Close eyes
• Aid in draining of tears
Origin Lacrimal bone, Frontal bone, Maxilla, medial angle of eyelids
Insertion Skin around orbital margins, eyelids
Innervation Facial nerve
, Levator palpebrae superioris m
Action • Raise upper eyelid
• Keep eye open
Origin Lesser wing of sphenoid
Insertion Upper eyelid
Innervation OCULOMOTOR NERVE
Frontalis
Action Raise eyebrows
Draws scalp forward and wrinkles skin of forehead
Origin Galea aponeurotica
Insertion Subcutaneous tissue of eyebrows
Innervation Facial nerve
,Occipitalis
Action Retracts scalp
Fixes galea aponeurotica so frontalis can act on eyebrows
Origin Superior nuchal line and temporal bone
Insertion Galea aponeurotica
Innervation Facial nerve
,Orbicularis oculi
Action • Surround orbital orifice
• Close eyes
• Aid in draining of tears
Origin Lacrimal bone, Frontal bone, Maxilla, medial angle of eyelids
Insertion Skin around orbital margins, eyelids
Innervation Facial nerve
, Levator palpebrae superioris m
Action • Raise upper eyelid
• Keep eye open
Origin Lesser wing of sphenoid
Insertion Upper eyelid
Innervation OCULOMOTOR NERVE
