The Orbicularis Oris is a circular muscle located around the mouth. It plays a crucial role in various facial movements, including closing the lips, puckering, and shaping the mouth for speech. This muscle is essential for actions like eating, drinking, and expressing emotions. As part of the facial muscles, the Orbicularis Oris is innervated by the facial nerve, which controls its movements. It is often referred to as the "kissing muscle" due to its involvement in puckering the lips. Proper function of this muscle is important for effective communication and oral health.