20. Facial Muscles-1
Orbicularis oculi: Closes the eyelids. Frontalis: Elevates eyebrows and wrinkles the forehead. Orbicularis oris: Closes and protrudes the lips. Buccinator: Flattens the cheeks and assists with chewing. Zygomaticus major: Elevates the corners of the mouth (smiling). Platysma: A large neck muscle that pulls down the corners of the mouth.