What drains into the hiatus semilunaris?
The anterior ethmoidal air cells drain into the hiatus. The hiatus is also connected to the frontal sinus by the frontonasal duct. The middle ethmoid air cells drain into the ethmoidal bulla. The maxillary sinus also drains into the semilunar hiatus here, posteriorly.
What passes through semilunar hiatus?
The semilunar hiatus is the gap that empties the ethmoid infundibulum located between the uncinate process and the ethmoid bulla. The nasal fontanelles are described as an area of the lateral nasal wall where no bone exists. The natural ostium of the maxillary sinus is located in the anterior fontanelle.
Does frontal sinus drain into hiatus semilunaris?
Frontal sinus open into the hiatus semilunaris in the middle meatus [16]. Frontal sinus opens in the infundibulum which is at the anterosuperior end of the hiatus semilunaris [17].
What does ethmoid sinusitis mean?
Sinusitis is an inflammation of the sinuses. Ethmoid sinusitis is the inflammation of a specific group of sinuses — the ethmoid sinuses — which sit between the nose and eyes. The ethmoid sinuses are hollow spaces in the bones around the nose. They have a lining of mucus to help prevent the nose from drying out.
What is the Ethmoidal Infundibulum?
The ethmoid infundibulum is a curved cleft of the ethmoid bone which leads into the anterior portion of the hiatus semilunaris. It is bordered medially by the uncinate process and laterally by the orbital plate of the ethmoid.
What is Ethmoidal Infundibulum?
What is the superior anterior opening in hiatus semilunaris?
The hiatus semilunaris is a semicircular shaped opening located on the lateral wall of the nasal cavity. It is a component of the ostiomeatal complex and serves as the opening for the frontal and maxillary sinuses and the anterior ethmoid air cells.
Where does the anterior ethmoidal cells drain?
The anterior ethmoidal air cells drain to the hiatus semilunaris and middle meatus via the ethmoid bulla, which forms parts of the ostiomeatal complex.
What does the ethmoid bone do?
The ethmoid bone is a singular porous cranial bone that makes up the middle area of the neurocranium and forms the midfacial region of the skull. It contributes to the formation of the orbit, nasal cavity, nasal septum and the floor of the anterior cranial fossa.