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Facial Muscles

Muscles of Facial Expression and Mastication

TermDefinition
Frontal Belly Origin: Epicranial aponeurosis Insertion: Tissues of eyebrows and bridge of nose Function: Raises eyebrows, wrinkles forehead horizontally
Occipital Belly Origin: Occipital bone Insertion: Epicranial aponeurosis Function: draws scalp backwards
Corrugator Supercilli Origin: Frontal Bone Insertion: Skin of eyebrow Function: Wrinkles forehead vertically
Obicularis Oculi Origin: Encircles Eyelid Function: Closes Eye
Zygomaticus Major Origin: Zygomatic Bone Insertion: Angle of mouth Function: Laughing (elevates angle of mouth)
Obicularis Oris Origin: Encircles mouth Function: Draws lips together
Buccinator Origin: Maxillae Insertion: Skin of sides of mouth Function: Facillitates smiling, and blowing air (ex: blowing air into a trumpet)
Deppresor Anguli Oris Origin: Mandible Insertion: Angle of mouth Function: Draws ends of mouth downward (ex: frowning)
Masseter Origin: Zygomatic arch Insertion: Mandible (external surface) Function: Elevates mandible, closing jaw
Temporalis Origin: Temporal bone Insertion: Mandible Function: Elevates mandible, closing jaw
Pterygoids Origin: Undersurface of skull Insertion: Mandible Function: Grates teeth
Created by: asalmeron
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