Answer
Location:
Frontalis. Overlies forehead over the frontal bone
Occipitalis. Located In rear of head over the occipital bone.
Action:
Frontalis: Elevates eyebrow as when glancing or in expressions of fright or surprise. Draws scalp
forward and wrinkles skin of forehead.
Occipitalis. Retracts scalp; flexes galea apneurotica ( epicranial aponeurotica); --facilitates action of
frontalis on eyebrow.
Work Step by Step
Origin.
Frontalis Galea aponeurotica
Occipitalis: Superior nuchal line and frontal bone.
Insertion:
Frontalis : Subcutaneous tissue of skin of upper eyelids (eyebrows)
Occipitalis . Galea aponeurotica
Innervation:
Frontalis: Facial nerve ( CN VII).
Occipital : ( CN VII)
