Post on 24-Feb-2016
description
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
•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
1. Orbicularis oris2. Orbicularis oculi3. Frontalis4. Buccinator5. Zygomaticus major & minor
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