El buccinador es un músculo oral de la expresión facial. Se encuentra situado entre la mandíbula y el maxilar superior, en profundidad con respecto a los demás músculos de la cara. Inserciones: se origina en el maxilar superior e inferior. Las fibras discurren en dirección inferomedial, fusionándose con el músculo orbicular de los labios y la piel de los labios. Acciones: tira de la mejilla hacia adentro, contra los dientes, evitando la acumulación de comida en esa zona. Inervación: ramas bucales del nervio facial. Irrigación sanguínea: arteria bucal (ramificaciones de la arteria maxilar). By TeachMeSeries Ltd (2026) Fig. 1: Los principales músculos orales de la expresión facial. Observa cómo se mezclan las fibras del buccinador y del orbicular de los labios. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the buccinator muscle? The buccinator is an oral muscle involved in facial expression, located between the mandible and the maxilla. It plays a crucial role in controlling the movement of the cheeks. What are the attachments of the buccinator muscle? The buccinator originates from both the upper and lower jaws, with its fibres running inferomedially. These fibres merge with the orbicularis oris muscle and the skin of the lips. What actions does the buccinator muscle perform? The buccinator pulls the cheek inward against the teeth, which helps prevent food accumulation in the oral cavity. This action is essential for effective chewing and swallowing. How is the buccinator muscle innervated? The buccinator muscle receives its nerve supply from the buccal branches of the facial nerve. This innervation is vital for its function in facial movements. What is the blood supply to the buccinator muscle? The buccinator is primarily supplied by the buccal artery, which is a branch of the maxillary artery. This vascular supply is crucial for the muscle's health and function. Rate This Article