El nasal es un músculo de la expresión facial. Es el músculo más grande de la nariz y está compuesto por dos partes: transversal y alar. Inserciones: Parte transversal: se origina en el maxilar, inmediatamente lateral a la nariz. Se inserta en una aponeurosis a lo largo del dorso de la nariz. Parte alar: se origina en el maxilar que cubre el incisivo lateral. Se inserta en el cartílago alar del esqueleto nasal. Acciones: Parte transversal: comprime la abertura nasal. Parte alar: ensancha la abertura nasal. Inervación: ramas bucales del nervio facial. Irrigación sanguínea: arteria facial y rama infraorbitaria de la arteria maxilar. By TeachMeSeries Ltd (2026) Fig. 1: los músculos nasales de la expresión facial. Obsérvese que el músculo nasal se compone de dos partes. 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 nasal muscle and what are its parts? The nasal muscle is a facial expression muscle located in the nose, consisting of two parts: the transverse part and the alar part. These components work together to facilitate various movements of the nasal opening. Where does the nasal muscle originate and insert? The transverse part of the nasal muscle originates from the maxilla, lateral to the nose, and inserts into an aponeurosis along the nasal dorsum. The alar part also originates from the maxilla, covering the lateral incisor, and inserts into the alar cartilage of the nasal skeleton. What actions does the nasal muscle perform? The nasal muscle performs two key actions: the transverse part compresses the nasal opening, while the alar part widens it. These movements are essential for facial expressions and nasal function. How is the nasal muscle innervated? The nasal muscle is innervated by the buccal branches of the facial nerve. This innervation is crucial for controlling the muscle's movements during facial expressions. What is the blood supply to the nasal muscle? The nasal muscle receives its blood supply from the facial artery and the infraorbital branch of the maxillary artery. This vascularisation supports its function and health. Valora este artículo