Muscular system
Orbicularis oris muscle
Musculus orbicularis oris
- System
- Muscular system
- Regions
- Head
- Side
- Left and right
- Part of
- Facial muscles
DescriptionUnreviewed
In human anatomy, the orbicularis oris muscle is a complex of muscles in the lips that encircles the mouth.
It is a sphincter, or circular muscle, but it is actually composed of four independent quadrants that interlace and give only an appearance of circularity.
It is also one of the muscles used in the playing of all brass instruments and some woodwind instruments.
This muscle closes the mouth and puckers the lips when it contracts.
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Muscle attachments
Origin
Names
- Latin
- Musculus orbicularis oris
- English
- Orbicularis oris muscle
- French
- Muscle orbiculaire de la bouche
- Spanish
- Músculo orbicular de la boca
- Portuguese
- Músculo orbicular da boca
In the same group
- Bucinator
- Corrugator supercilii
- Depressor anguli oris
- Depressor labii inferioris
- Depressor septi nasi
- Levator anguli oris
- Levator labii superioris
- Levator nasolabialis
- Mentalis muscle
- Nasalis muscle
- Orbital part of orbicularis oculi
- Palpebral part of orbicularis oculi
- Procerus muscle
- Risorius muscle
- Zygomaticus major muscle
- Zygomaticus minor muscle