orbicularis oris Directory References Discover How Deadly Is Quicksand? Water Fluoridation: Just the Facts Who Invented the Internet? 7 of the World’s Deadliest Plants What Is the Emoluments Clause? 7 Deadliest Weapons in History Timeline of the 2000s Contents orbicularis oris anatomy Ask Our Chatbot a Question Ask Our Chatbot a Question Learn about this topic in these articles:lips In lips…lip is supplied by the orbicularis oris muscle, which encircles the opening. This muscle and others that radiate out into the cheeks make possible the lips’ many variations in shape and expression.Read More