orbicularis oris muscle

(redirected from musculus orbicularis oris)

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] .

orbicularis oris muscle

Facial muscle. Origin: adjacent facial muscles that surround mouth. Insertion: into itself and skin of lips while encircling mouth. Nerve: facial (CN VII). Action: closes and purses lips.
See: face and headfor illus.
See also: muscle

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] .
References in periodicals archive ?
In addition, there were neurogenic involvement findings in the musculus orbicularis oculi and musculus orbicularis oris. These finding suggest that the facial involvement was evidentin House-Brackmann FP to bilateral Stage III taught.
In addition, muscle fibers showing denervation in the musculus orbicularis oris, which is a circular muscle, can act as an additional stimulus for the contralateral facial nerve to show axonal regenerative changes (1).

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