The facial muscles are subcutaneous muscles that control facial expression. They generally originate on bone, and insert on the skin of the face. The facial muscles are innervated by facial nerve (cranial nerve VII). In contrast, the nearby masticatory muscles are innervated by the mandibular nerve, a branch of the trigeminal nerve (V).
    Origin, Insertion and Action of Main Facial Muscles:

    NameOrigin to insertionAction
    Epicranius: Frontalis & OccipitalisCranial aponeurosis to eyebrowsRaises the eyebrows
    Orbicularis oculiPortions of the frontal and maxilla to the Skin around eyesBlinks and closes eyes
    Orbicularis orisSkin around mouthCloses and protrudes lips
    BuccinatorMandible/maxilla to skin around mouthFlattens cheek against teeth
    ZygomaticusZygomatic bone to corner of lipsRaises corner of mouth
    PlatysmaFascia of chest to lower border of mandibleDraws mouth downward

    Muscles of the facial expression : Demonstration Video

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