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orbicularis oris muscle

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or·bi·cu·la·ris o·ris mus·cle

(ōr-bik'yū-lā'ris ō'ris mŭs'ĕl)
Origin, by nasolabial band from septum of the nose, by superior incisive bundle from incisor fossa of maxilla, by inferior incisive bundle from lower jaw each side of symphysis; insertion, fibers surround mouth between skin and mucous membrane of lips and cheeks, and are blended with other muscles; action, closes lips; nerve supply, facial.
Synonym(s): musculus orbicularis oris [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

or·bi·cu·la·ris o·ris mus·cle

(ōr-bik'yū-lā'ris ō'ris mŭs'ĕl)
Origin, by nasolabial band from septum of the nose, by superior incisive bundle from incisor fossa of maxilla, by inferior incisive bundle from lower jaw each side of symphysis; insertion, fibers surround mouth between skin and mucous membrane of lips and cheeks, and are blended with other muscles; action, closes lips; nerve supply, facial.
Synonym(s): musculus orbicularis oris [TA] .
Medical Dictionary for the Dental Professions © Farlex 2012
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References in periodicals archive
On the basis of the above mentioned findings in this study, the conclusion may be drawn that yielding effect of lips, because of relaxed orbicularis oris muscle and greater lip vermilion is the contributing factor in the development of bimaxillary dento alveolar protrusion.
LIP MORPHOLOGY: A FACTOR LEADING TO BIMAXILLARY DENTOALVEOLAR PROTRUSION
A cheek-temple flap is elevated medially to the level of the nasolabial fold and orbicularis oris muscle, which is dissected circumferentially from the surrounding skin and mucosa.
Reconstruction of the paralyzed face
MOUTH LIFT THIS works the orbicularis oris muscle which encircles the mouth, as well as the muscles in the cheeks, around the eyes, and the forehead.
5 years younger in 7 days; How a unique diet smoothed away the wrinkles for Denise
Minimal functional recovery of the orbicularis oculi and orbicularis oris muscles was observed 5 months post-injury.
Traumatic Facial and Vestibulocochlear Nerve Injury in The Internal Acoustic Canal in The Absence of A Temporal Bone Fracture
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