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The alae of the nose are supplied by nasal branches of CN V 2, the infraorbital nerve, and internal nasal branches of infraorbital nerve that supply the septum and the vestibule. [46] [13] The maxillary sinus is supplied by superior alveolar nerves from the maxillary and infraorbital nerves.
Nose and nasal cavities. (Sphenoid sinus labeled at upper right.) The sphenoid sinus is a paired paranasal sinus occurring within the body of the sphenoid bone. It represents one pair of the four paired paranasal sinuses. [1] The pair of sphenoid sinuses are separated in the middle by a septum of sphenoid sinuses.
The maxillary sinuses, the largest of the paranasal sinuses, are under the eyes, in the maxillary bones (open in the back of the semilunar hiatus of the nose). They are innervated by the maxillary nerve (CN V2). [2] The frontal sinuses, superior to the eyes, in the frontal bone, which forms the hard part of the forehead.
The olfactory nerve is sensory in nature and originates on the olfactory mucosa in the upper part of the nasal cavity. From the olfactory mucosa, the nerve (actually many small nerve fascicles) travels up through the cribriform plate of the ethmoid bone to reach the surface of the brain.
Nerve supply. Innervation of the nasal cavity responsible for the sense of smell is via the olfactory nerve, which sends microscopic fibers from the olfactory bulb through the cribriform plate to reach the top of the nasal cavity. General sensory innervation is by branches of the trigeminal nerve (V 1 and V 2): Nasociliary nerve (V 1)
Anatomical terminology. [ edit on Wikidata] The pyramid-shaped maxillary sinus (or antrum of Highmore) is the largest of the paranasal sinuses, located in the maxilla. It drains into the middle meatus of the nose [1] [2] through the semilunar hiatus. It is located to the side of the nasal cavity, and below the orbit.
The nasal septum contains bone and hyaline cartilage. [3] It is normally about 2 mm thick. [4] The nasal septum is composed of four structures: Maxillary bone (the crest) Perpendicular plate of ethmoid bone. Septal nasal cartilage (ie, quandrangular cartilage) Vomer bone. The lowest part of the septum is a narrow strip of bone that projects ...
The ( medial and lateral) posterior superior nasal nerves are branches of the maxillary nerve (CN V2) [3] : 496 that arise in the pterygopalatine fossa from pterygopalatine ganglion [3] : 369–370 and pass through the sphenopalatine foramen into the nasal cavity [3] : 496 to innervate the nasal septum (the medial nerves), and the ...
The inner surface is concave from side to side, and is traversed from above downward, by a groove for the passage of a branch of the nasociliary nerve. Articulations. The nasal articulates with four bones: two of the cranium, the frontal and ethmoid, and two of the face, the opposite nasal and the maxilla. Other animals
Nasal mucosa. The nasal mucosa lines the nasal cavity. It is part of the respiratory mucosa, the mucous membrane lining the respiratory tract. [1] [2] The nasal mucosa is intimately adherent to the periosteum or perichondrium of the nasal conchae. It is continuous with the skin through the nostrils, and with the mucous membrane of the nasal ...