Question

multiple choice question
the lips are formed primarily by the ______ muscle.
orbicularis oculi
buccinator
orbicularis oris
levator labii

Explanation:

• Orbicularis oculi: This muscle is around the eye, not the lips.
• Buccinator: It is in the cheek, not the main lip - forming muscle.
• Orbicularis oris: This muscle encircles the mouth (lips) and is the primary muscle forming the lips.
• Levator labii: It elevates the lip but is not the primary muscle forming the lips.

Answer:

orbicularis oris