China
Africa
Explore chapters and articles related to this topic
Head and Neck
Published in Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno, Understanding Human Anatomy and Pathology, 2018
Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno
The maxillary nerve (CN V2) also has many sensory branches. The nasopalatine nerve is a branch of CN V2 that lies in the mucosa of the nasal septum and runs with the sphenopalatine artery from the spheno-palatine foramen to the incisive canal and supplies the nasal septum and the mucosa that covers the anterior hard palate (Plate 3.39). In the lateral wall of the nasal cavity, the lesser and greater palatine nerves descend from the maxillary nerve, running through the pterygopalatine ganglion into the greater palatine canal, and pass through the lesser and greater palatine foramina, respectively. Parasympathetic fibers run with the maxillary nerve, having originated as branches of the facial nerve. These facial branches run first as the greater petrosal branch of the facial nerve, then as the nerve of the pterygoid canal (Vidian nerve), and then synapse in the pterygopalatine ganglion (see Section 3.3.1.7). Postganglionic axons that arise in this ganglion are distributed with branches of the maxillary nerve (Plate 3.16). The nerves of the pterygopalatine ganglion stimulate the lacrimal gland (crying) and also secretions from the mucosa of the nasal cavity, paranasal sinuses, roof of the mouth, soft palate, and nasopharynx.
Oral Cavity Tumours Including Lip Reconstruction
Published in John C Watkinson, Raymond W Clarke, Terry M Jones, Vinidh Paleri, Nicholas White, Tim Woolford, Head & Neck Surgery Plastic Surgery, 2018
The maxilla comprises the maxillary alveolus and the hard palate. The osseous alveolar process supports the maxillary dentition, being covered by a mucoperiosteum with a stratified squamous epithelium. The maxillary alveolus merges laterally with the buccal mucosa and lips at the gingival sulcus and medially with the hard palate. The alveolar process extends to the upper end of the pterygopalatine arches posteriorly. The hard palate lies within the horseshoe shape of the maxillary alveolus, merging imperceptively with the alveolar mucosa. The hard palate has minor salivary glands located in the submucosa, 33% of palatal tumours being derived from salivary epithelium.182 Posteriorly, the hard palate merges with the soft palate at the posterior edge of the palatine bone. The WHO classifies these anatomical sites as ICD-10 C05.0 (hard palate) and C03.0 (maxillary alveolus).1 Sensory innervation to the maxillary mucosa is by branches of the maxillary division of the trigeminal nerve. The nasopalatine nerve supplies the anterior hard palate, passing through the incisive foramen, the posterior palate being supplied by the paired greater palatine nerves that pass through the greater palatine foraminae. Lymphatic drainage is to the ipsilateral cervical nodes via the submandibular nodes or potentially the retropharyngeal nodes in posteriorly located tumours.
Transnasal endoscopic marsupialization of nasopalatine duct cysts: A novel ‘Mickey Mouse’ sign and a septum-sparing surgical technique to reduce paresthesia risk
Published in Acta Oto-Laryngologica Case Reports, 2023
Shravan Gowrishankar, Nora Haloob, Claire Hopkins
The nasopalatine nerve runs through the nasal septum and courses through the mucoperichondrial, sloping downwards into the incisive canals to supply the hard palate, including the area adjacent to the upper incisors [13]. Damage to this nerve can lead to paresthesia or pain in this area. However, there may still be sensations due to dual supply from the anterior palatine nerve [14].
Nanotechnologies for intranasal drug delivery: an update of literature
Published in Pharmaceutical Development and Technology, 2021
Rosamaria Lombardo, Teresa Musumeci, Claudia Carbone, Rosario Pignatello
The nose, both external and internal, is very vascularized by venous, arterial and lymphatic vessels. The innervation is constituted by: ophthalmic nerve, nasopalatine nerve, nasociliary nerve, nerve fibers of the olfactory nerves. The last ones pass through the holes of the lamina cribrosa, ranging from the olfactory cells to the olfactory bulb of the brain (Dkhar et al. 2018).