El pterigoideo medial es un músculo masticatorio. Tiene una cabeza profunda y otra superficial, y se encuentra por debajo del pterigoideo lateral. Inserciones: La cabeza superficial se origina en la tuberosidad maxilar y en la apófisis piramidal del hueso palatino. El cabezal profundo se origina en la cara medial de la placa del pterigoideo lateral del hueso esfenoides. Ambas cabezas se insertan en la rama de la mandíbula, cerca del ángulo de la mandíbula. Acciones: elevación de la mandíbula (cierre de la boca). Inervación: nervio mandibular (V3). Irrigación sanguínea: ramas pterigoideas de las arterias maxilar, bucal y facial. By TeachMeSeries Ltd (2026) Fig. 1: los músculos pterigoideos medial y lateral. 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 Frequent questions What is the medial pterygoid muscle? The medial pterygoid muscle is a masticatory muscle that plays a key role in jaw movement. It has a superficial head originating from the maxillary tuberosity and a deep head from the medial surface of the lateral pterygoid plate of the sphenoid bone. What are the attachments of the medial pterygoid muscle? The medial pterygoid muscle has two heads; the superficial head attaches to the maxillary tuberosity and the palatine bone, while the deep head attaches to the medial aspect of the lateral pterygoid plate. Both heads insert at the ramus of the mandible, near its angle. What actions does the medial pterygoid muscle perform? The primary action of the medial pterygoid muscle is to elevate the mandible, facilitating the closure of the mouth. This muscle is essential for effective chewing and grinding of food. Which nerve innervates the medial pterygoid muscle? The medial pterygoid muscle is innervated by the mandibular nerve, specifically its V3 branch. This nerve supplies the muscle, allowing for coordinated jaw movements. What is the blood supply to the medial pterygoid muscle? The blood supply to the medial pterygoid muscle comes from the pterygoid branches of the maxillary artery, along with contributions from the buccal and facial arteries. This vascular supply is crucial for the muscle's function and health. Valora este artículo