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orbicularis oris muscle

incisivii labii inferioris

Fibres that encircle the opening of the oral cavity make up orbicularis oris, a superficial muscle of the face. Its attachments are unusually varied for a facial muscle, taking in the maxilla, the mandible, the skin, and the modiolus, the fibrous node at the angle of the mouth where several facial muscles converge. It participates in oral and pharyngeal behaviours, and like the other muscles of facial expression it is innervated by the facial nerve, cranial nerve VII. The encircling arrangement of its fibres, rather than a simple origin-to-insertion course, is what allows the muscle to act as a sphincter around the mouth. It is classified among the facial muscles.

The orbicularis oris is a superficial facial muscle with fibers that encircle the opening of the oral cavity that attaches to the maxilla, mandible, skin and modiolus, and that participates in oral/pharyngeal behaviors, and is innervated by the facial nerve (CN VII).

On this page
Tipe Muscle
Struktur Induk facial muscle
Nama Latin incisivii labii inferioris
FMA ID 46841

Frequently Asked Questions

What is the orbicularis oris muscle?

The orbicularis oris is a superficial facial muscle with fibers that encircle the opening of the oral cavity that attaches to the maxilla, mandible, skin and modiolus, and that participates in oral/pharyngeal behaviors, and is innervated by the facial nerve (CN VII).

What is the Latin name for the orbicularis oris muscle?

The Latin name for the orbicularis oris muscle is incisivii labii inferioris.

References

  1. Foundational Model of Anatomy — FMA:46841 Reference anatomy ontology (University of Washington)
  2. UBERON — UBERON:0010933 Cross-species anatomy ontology (EMBL-EBI Ontology Lookup Service)
  3. Wikipedia — orbicularis oris muscle Encyclopedia article (verified cross-reference)

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.