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Facial Muscles
4 cards·by ninawordjunkie
What are the origin and insertion of the orbicularis oris muscle?
Origin: Corner of lips. Insertion: Facial midline
What is the function of the orbicularis oris muscle?
constricts oral opening, facilitates lip closure, protrusion and compression against
teeth.
What innervates the orbicularis oris muscle?
VII Facial (buccal branch)
What is the origin and insertion of the risorius muscle?
Origin: Posterior along the fascia of the masseter muscle above the parotid gland.
Insertion: Modiolus (corners of the mouth)