What is the posterior nasal nerve?
The posterior nasal nerve is the dominant source of the parasympathetic, sympathetic, and sensory fibers that innervate the nasal respiratory mucosa. Therefore, a posterior nasal neurectomy (PNN) is thought to induce denervation of the nasal mucosa and relieve the nasal symptoms of allergic rhinitis.
Is pterygopalatine ganglion same as sphenopalatine ganglion?
The pterygopalatine ganglion (also known as the sphenopalatine ganglion or, more rarely, the nasal ganglion or Meckel’s ganglion; Larsell and Fenton, 1928; Gloster, 1961) lies deep within the pterygoid fossa, rostral to the anterior opening of the pterygoid canal and inferior to the maxillary nerve (Kuntz, 1945; …
What does the pterygopalatine nerve innervate?
The branches of the pterygopalatine ganglion carry parasympathetic, sympathetic, and general sensory fibers to several locations by way of its six branches. The mixed nerve fibers travel through the cranial ostia to innervate the nose, palate, and nasopharynx.
What nerves run through the maxillary sinus?
| Maxillary nerve | |
|---|---|
| From | Trigeminal nerve |
| To | Infraorbital nerve, zygomatic nerve, palatine nerve, nasopalatine nerve, sphenopalatine ganglion |
| Identifiers | |
| Latin | Nervus maxillaris |
What nerve goes to your nose?
The external nasal nerve is a terminal branch of the anterior ethmoidal nerve….
| External nasal nerve | |
|---|---|
| From | anterior ethmoidal nerve |
| Innervates | external skin of nose to the tip |
| Identifiers | |
| Latin | Rami nasales externi nervi infraorbitalis |
What is rhinitis and what causes it?
Rhinitis is a reaction that happens in the eyes, nose, and throat when allergens in the air trigger histamine to be released in the body. Some of the most common causes of rhinitis are pollen, dust mites, mold, cockroach waste, animal dander, fumes and odors, hormonal changes, and smoke.
What is sphenopalatine neuralgia?
Sphenopalatine ganglion (SPG) neuralgia is a complex disease characterized by chronic head and neck pain often accompanied by autonomic features. Although symptoms are highly variable, patients typically experience dull headaches associated with pain in the maxillary arch and teeth.
What is pterygopalatine fossa?
The pterygopalatine fossa (PPF) is a cone-shaped depression deep to the infratemporal fossa and posterior to the maxilla on both sides of the skull. The fossa is located between the pterygoid process and the maxillary tuberosity, close to the orbital apex.
What does the posterior superior alveolar nerve innervate?
The posterior superior alveolar nerve innervates the second and third maxillary molars, and two of the three roots of the maxillary first molar (all but the mesiobuccal root).
What type of nerve is the maxillary nerve?
The maxillary nerve, or second division of the trigeminal, is a sensory nerve that crosses the pterygopalatine fossa, traverses the orbit in the infraorbital groove and canal in the floor of the orbit, and appears upon the face at the infraorbital foramen as the infraorbital nerve.
What is the function of posterior superior nasal nerve?
Dr Daniel J Bell ◉ and Dr Shi Hong Shen et al. The posterior superior nasal nerves, also known as the short sphenopalatine nerves, are branches of the pterygopalatine ganglion. There are lateral and medial branches which supply the nasal cavity.
What are the lateral and medial branches of the nasal nerve?
There are lateral and medial branches which supply the nasal cavity. The nerves branch off the maxillary division of the trigeminal nerve (CN V) just after emerging from the foramen rotundum to enter the pterygopalatine fossa.
Where does the sphenopalatine enter the posterosuperior nasal cavity?
It leaves the fossa inferomedially through the sphenopalatine foramen with the nasopalatine nerve to enter the posterosuperior nasal cavity just behind the superior nasal meatus where it divides into medial and lateral branches:
What is the function of the pterygopalatine ganglion in the nose?
At the pterygopalatine ganglion it receives parasympathetic fibers which supply nasal glands. It leaves the fossa inferomedially through the sphenopalatine foramen with the nasopalatine nerve to enter the posterosuperior nasal cavity just behind the superior nasal meatus where it divides into medial and lateral branches: