Nasopalatine Nerve - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The nasopalatine nerve is a branch of the maxillary division of the trigeminal nerve. It supplies sensory innervation to the mucosa of the nasal septum, anterior hard palate and parts of the gingiva (gums). 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 Course The nasopalatine nerve arises from the pterygopalatine ganglion (a parasympathetic ganglion situated in the pterygopalatine fossa). It is formed by fibres from the maxillary division of the trigeminal nerve. After its formation, the nasopalatine nerve exits the pterygopalatine fossa and enters the nasal cavity via the sphenopalatine foramen – a small opening at the junction of the sphenoid and palatine bones. It passes along the roof of the nasal cavity to reach the nasal septum. The nerve then travels inferiorly and anteriorly along the nasal septum. At the base of the septum, the nasopalatine nerve traverses the incisive canal of the hard palate to enter the roof of the mouth. It terminates by anastomosing with the fibres of the greater palatine nerve to supply the anterior hard palate. By TeachMeSeries Ltd (2026) Fig 1The nasopalatine nerve travels inferiorly and anteriorly along the nasal septum before passing through the incisive canal. By TeachMeSeries Ltd (2026) Fig 2The branches of the pterygopalatine ganglion and the maxillary nerve. Sensory Supply The nasopalatine nerve provides general sensory innervation to: Posteroinferior portion of the nasal septum. Anterior hard palate. Gingiva associated with the upper incisors. Parasympathetic Supply The parasympathetic fibres of the nasopalatine nerve innervate the mucus glands of the mucosa of the nasal septum and anterior hard palate. Frequent questions What is the nasopalatine nerve and its primary function? The nasopalatine nerve is a branch of the maxillary division of the trigeminal nerve, primarily responsible for providing sensory innervation to the mucosa of the nasal septum, anterior hard palate, and associated gingiva. It plays a crucial role in the sensation of these areas. Where does the nasopalatine nerve originate? The nasopalatine nerve originates from the pterygopalatine ganglion, which is located in the pterygopalatine fossa. It is formed by fibres from the maxillary division of the trigeminal nerve. How does the nasopalatine nerve reach the nasal cavity? The nasopalatine nerve exits the pterygopalatine fossa and enters the nasal cavity through the sphenopalatine foramen, a small opening between the sphenoid and palatine bones. It then travels along the roof of the nasal cavity to the nasal septum. What areas does the nasopalatine nerve supply sensory innervation to? The nasopalatine nerve supplies sensory innervation to the posteroinferior portion of the nasal septum, the anterior hard palate, and the gingiva associated with the upper incisors. This sensory function is essential for the perception of touch and pain in these regions. What is the role of the parasympathetic fibres in the nasopalatine nerve? The parasympathetic fibres of the nasopalatine nerve innervate the mucus glands in the mucosa of the nasal septum and anterior hard palate. This innervation is important for maintaining moisture and function in these areas. Rate This Article