Facial muscles are a group of muscles located in the face that control various expressions and movements. They are responsible for actions such as smiling, frowning, and blinking. These muscles are unique because they are attached to the skin rather than bones, allowing for a wide range of facial expressions. The main facial muscles include the orbicularis oculi, which helps close the eyes, and the zygomaticus major, which is involved in smiling. These muscles are innervated by the facial nerve, which plays a crucial role in coordinating facial movements and expressions.