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Mimetic muscles in the region of the mouth

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Muscle
Origin
Insertion
Function
M. Orbicularis oris -pars marginalis et pars labialis   Fibers arranged circularly   Fibers arranged circularly   Closes the lips; Protrudes lips forward (sucking shape)  
M. Levator anguli oris   Fossa canina   Skin at the angle of the mouth   Lifts the angle of the mouth  
M. Levator labii superioris   Margo infraorbitalis maxillae   Skin of the upper lip   Lifts the upper lip  
M. Zygomaticus major et minor   Os zygomaticum   Skin at the angle of the mouth   Lifts the angle of the mouth upward and laterally; Expression of pleasure (laughing muscle)  
M. Risorius   Fascia masseterica   Skin at the angle of the mouth   Pulls the angle of the mouth laterally; Produces the nasolabial folds; Expression of pleasure (laughing muscle)  
M. Buccinator   Proc. alveolaris maxillae et mandibulae; Raphe pterygomandibularis   Skin at the angle of the mouth   Pulls the angle of the mouth laterally; Compresses the cheeks; Expression of satisfaction  
M. Depressor anguli oris   Basis mandibulae   Skin at the angle of the mouth   Pulls the angle of the mouth downward; Expression of sadness  
M. Depressor labii inferioris   Basis mandibulae   Skin of the upper lip   Pulls the angle of the mouth and the lower lip downward; Expression of preserverance  
M. Mentalis   Proc. alveolaris   Skin of the chin   Produces the chin-lip furrow; Expression of doubt  


   


 
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Created by: gustafb82