Orbicularis oris muscle
Musculus orbicularis oris
Closes and purses the lips.
- System
- Muscle
- Region
- Head
- Sides
- Both
Where it runs from and to
A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.
- Origin
- No bony origin; the fibres encircle the mouth within the lips.
- Insertion
- Blends with the other muscles of the lips.
- Action
- Closes and purses the lips.
- Nerve
- Buccal branches of the facial nerve.
Written for Vetomica in its own words from the standard reference anatomy of the pig; the books it was checked against are listed below.
Terminology
- English
- Orbicularis oris muscle
- Latin (NAV)
- Musculus orbicularis oris
- Status
- A valid term in the Nomina Anatomica Veterinaria