Anatom3DOrbicularis oris
Musculus orbicularis oris · Kruhový sval ústní
Muscles
Looks like
A ring of muscle encircling the mouth inside the lips.
What it does
Closes and puckers the lips for speech, eating and kissing.
Keeping it well
Weakness from facial palsy lets food and drink escape; a drooping corner of the mouth with sudden onset needs stroke assessment.