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Muscles acting on Head, Neck, and Trunk

Axial muscles of head and neck
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Orbicularis oris
Closes the lips
Orbicularis oculi
Closes the eyes
Zygomaticus
Draws corners of mouth up and lateral. Smiling
Masseter
Elevates mandible
Temporalis
Elevates the mandible. coronoid process
Buccinator
Compresses cheeks. kissing face
Sternocleidomastoid
Flexes neck; lateral rotation of head
Digastric
Depresses mandible, elevates the hyoid bone