El masetero es un músculo de la masticación. Tiene forma cuadrangular y consta de dos partes: una profunda y otra superficial. Inserciones: La parte superficial se origina en la apófisis maxilar del hueso cigomático. La parte profunda se origina en el arco cigomático del . Ambas partes se unen a la rama de la mandíbula. Acciones: elevación de la mandíbula (cierra la boca). Inervación: nervio mandibular (V3). Irrigación sanguínea: arteria maseterina (rama de la arteria maxilar). By TeachMeSeries Ltd (2026) Fig. 1: el músculo masetero. Solo se ve la parte superficial de la cabeza. Característica Pro - Modelo en 3D 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 Característica Pro - Atlas de disección Prosection of the parotid gland and surrounding structures. Note the close anatomical relationship between the parotid gland and the facial nerve. Prosection of the parotid gland and surrounding structures. Note the close anatomical relationship between the parotid gland and the facial nerve. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Frequent questions What is the masseter muscle? The masseter muscle is a key muscle involved in mastication, characterised by its quadrangular shape and consisting of deep and superficial parts. It plays a crucial role in elevating the jaw to close the mouth. Where does the masseter muscle attach? The superficial part of the masseter muscle originates from the maxillary process of the zygomatic bone, while the deep part arises from the zygomatic arch. Both parts insert onto the ramus of the mandible. What is the primary action of the masseter muscle? The primary action of the masseter muscle is to elevate the mandible, which effectively closes the mouth during chewing. This action is essential for the process of mastication. Which nerve innervates the masseter muscle? The masseter muscle is innervated by the mandibular nerve, specifically the V3 branch. This nerve is responsible for transmitting motor signals to facilitate the muscle's function. What is the blood supply to the masseter muscle? The masseter muscle receives its blood supply from the masseteric artery, which is a branch of the maxillary artery. This vascular supply is vital for maintaining the muscle's health and function. Valora este artículo