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Muscles of the Facial Expressions

Muscles of the Facial Expressions. Muscles of the Head & Neck. Include muscles that move the face, tongue, and larynx Responsible for verbal and nonverbal communication, eating, and control of eye movements Subdivided into groups: Muscles of facial expression Muscles of mastication

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Muscles of the Facial Expressions

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  1. Muscles of the Facial Expressions

  2. Muscles of the Head & Neck • Include muscles that move the face, tongue, and larynx • Responsible for verbal and nonverbal communication, eating, and control of eye movements • Subdivided into groups: • Muscles of facial expression • Muscles of mastication • Muscles of the tongue • Muscles of the pharynx & larynx • Muscles of the eye

  3. Muscles of Facial Expression • Originate on the surface of the skull • Insertions are woven into the superficial fascia and the dermis therefore, when they contract the skin moves • Innervated by the facial nerve Make study cards – you will be tested on each and everyone!

  4. Muscles of Facial Expression - Mouth • Buccinator– Compresses cheeks • Orbicularis oris - Compresses, purses lips

  5. F:Depressor labii inferioris - Depresses lip • A:Levator labii superioris – Elevates upper lip • D:Risorius - Draws corner of mouth to the side • E:Depressor anguli oris – Depresses corner of mouth • C:Zygomaticus major, B:Zygomaticus minor – retracts and elevates corner of mouth

  6. Mentalis – Elevates and protrudes lower lip

  7. Muscles of Facial Expression - The Eye • B: Corrugatorsupercilii – Pulls skin inferiorly and anteriorly; wrinkles brow • C: Orbicularis oculi– Closes eye

  8. Levator palpebrae superioris – Elevates upper eyelid

  9. Muscles of Facial Expression - Nose • Procerus – moves nose, changes position and shape of nostrils • Nasalis – compresses bridge, depresses tip of nose; elevates corners of nostrils

  10. Muscles of Facial Expression - Ear • Temporoparietalis – tenses scalp, moves pinna of ear

  11. Muscles of Facial Expression - Scalp • Frontalis – Raises eyebrows, wrinkles forehead • Occipitalis – Tenses and retracts scalp

  12. Muscles of Facial Expression - Neck • Platysma – tenses skin of neck, depresses mandible

  13. Quick Quiz • Orbicularisoris • Orbicularisoculi • Frontalis • Buccinator • Zygomaticus major & minor

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