The synergist to the orbicularis oris is primarily the buccinator muscle. The buccinator helps compress the cheeks and assists in actions such as chewing and blowing, which complements the functions of the orbicularis oris in controlling the movement of the lips. Together, these muscles work to facilitate various oral movements and expressions.
buccinator muscle
mentralis buccula
orbicularis oris
The antagonist of the orbicularis oris muscle is the depressor anguli oris muscle. It is responsible for depressing the angle of the mouth, which opposes the action of the orbicularis oris muscle that closes and puckers the lips.
orbicularis oris
orbicularis oris
The arrangement of the fascicles in orbicularis oris is circular.
Muscles that are used for kissing are 34 facial muscles, and 112 postural muscles. The most important one is orbicularis oris muscle, which encircles mouth.
orbicularis oris
orbicularis oris
The eyes' muscle group is the orbicularis oculi
Sphincter Muscle