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 Muscles of the tongue Muscles of the pharynx & larynx Muscles of the eye

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!

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

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

Mentalis – Elevates and protrudes lower lip

Muscles of Facial Expression - The Eye B: Corrugator supercilii – Pulls skin inferiorly and anteriorly; wrinkles brow C: Orbicularis oculi – Closes eye

Levator palpebrae superioris – Elevates upper eyelid

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

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

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

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

Quick Quiz Orbicularis oris Orbicularis oculi Frontalis Buccinator Zygomaticus major & minor