Facial structures refer to the various bones, muscles, and tissues that make up the human face. The main bones include the maxilla, mandible, and zygomatic bones, which provide shape and support. Muscles in the face allow for expressions and movements, such as smiling or frowning, by contracting and relaxing. In addition to bones and muscles, facial structures also include features like the nose, eyes, and lips. These elements work together to create individual appearance and play a crucial role in communication and social interaction. Understanding facial structures is important in fields like anatomy and cosmetic surgery.