Muscle Actions Flashcards
Frontalis
Raises eyebrows
Occipitalis Action
Retracts scalp
Orbicularis Oculi action
Close eyelids
Orbicularis Oris action
Closes mouth/puckers lips
Depressor Anguli Oris action
Frown
Depressor Labii Inferioris
Depresses lower lip
Levator Labii Superioris action
Elevates upper lip
Zygomaticus Major & Minor actions
Smile
Platysma
Tenses skin of neck
Depresses mandible
Buccinator
Compresses cheek
Masseter action
Origin
Insertion
A: Elevates mandible
O: Zygomatic arch
I: angle of mandibular ramus
TemporaliS action
Origin
Insertion
Elevates mandible
Squamous part of temporal bone
Coronoud process of mandible
Genioglossus action
Insertion
Protracts tongue
Tongue
Hyoglossus & Styloglossus action
Insertions
Retracts tongue
Side of tongue & side/base of tongue
Diagastric action
Depresses mandible