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Nasal surface. The maxillary hiatus (also known as maxillary sinus ostium, maxillary ostium, or opening from the maxillary sinus) [citation needed] is the opening of a maxillary sinus into the middle nasal meatus of the nasal cavity. It is situated superoposteriorly upon the lateral nasal wall, opening into the nasal cavity at the posterior ...
Anatomy. The ethmoidal infundibulum is bordered medially by the uncinate process of the ethmoid bone, and laterally by the orbital plate of the ethmoid bone. [3] The ethmoid infundibulum leads towards the maxillary hiatus. [2]: 690 The anterior ethmoidal cells open into the anterior part of the infundibulum. [6]
The semilunar hiatus (eg, hiatus semilunaris) is a crescent-shaped [citation needed] /semicircular/ [1] curved [2] slit [2] /groove [1] upon the lateral wall of the nasal cavity [3] at the middle nasal meatus just inferior to the ethmoidal bulla. [2] It is the location of the openings for the frontal sinus, maxillary sinus, and anterior ...
The inferior nasal concha (inferior turbinated bone or inferior turbinal/turbinate) is one of the three paired nasal conchae in the nose. It extends horizontally along the lateral wall of the nasal cavity and consists of a lamina of spongy bone, curled upon itself like a scroll, (turbinate meaning inverted cone). [1]
The frontonasal duct is a duct through which either frontal sinus drains into the nasal cavity. [2][3] Each frontal sinus opens into the frontonasal duct by an opening (the opening of frontal sinus or frontal sinus aperture[4]) on the inferomedial part [3] of the floor of the sinus. [4] The frontonasal duct passes inferior-ward [5] to open ...
Frontal sinus. Outline of bones of face, showing position of air sinuses. Frontal sinus is shown in green. The frontal sinuses are one of the four pairs of paranasal sinuses that are situated behind the brow ridges. Sinuses are mucosa -lined airspaces within the bones of the face and skull. Each opens into the anterior part of the corresponding ...
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 from the maxilla and the palatine bones, and is the length of the septum.
In anatomy, a hiatus is a natural fissure in a structure. Examples include: Adductor hiatus. Aortic hiatus. Esophageal hiatus, the opening in the diaphragm through which the oesophagus passes from the thorax into the abdomen. Greater petrosal nerve hiatus. Maxillary hiatus.
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