Anatomy After an accident, a patient is unable to close her mouth completely due to certain facial injuries. Which muscle is paralyzed most commonly? A Orbicularis oris B Zygomaticus major C Levator anguli oris D Buccinators 💡 Explanation After an accident, a patient is unable to close her mouth completely due to certain facial injuries. Which muscle is paralyzed most commonly? ✓ Correct Answer: A. Orbicularis oris