Where is the ethmoid air cells

View revision history Report problem with Article. Citation, DOI and article data. St-Amant, M. Ethmoidal air cells. Reference article, Radiopaedia. Ethmoidal air cell Ethmoidal sinuses Ethmoid sinuses Ethmoid air cells Ethmoid air cell. URL of Article. On this page:. Clin Otolaryngol Allied Sci. Keith L. Moore, Arthur F. Dalley, A.

Clinically Oriented Anatomy. Last, R. The middle ethmoidal air cells drain into the middle nasal meatus with an opening located on or superiorly to the ethmoid bulla, a fissure in the lateral wall of the nasal cavity. The posterior ethmoidal air cells drain into the superior nasal meatus, usually by a single orifice. Blood supply The arterial blood is supplied to the ethmoidal air cells via the following vessels: nasal branches of the sphenopalatine artery, anterior and posterior ethmoidal branches of the ophthalmic artery.

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The website cannot function properly without these cookies, which is why they are not subject to your consent. If present, a Haller cell can cause narrowing of the infundibulum and maxillary sinus ostuim potentially causing obstruction. MS: maxillary sinus, NLD: nasolacrimal duct. Coronal image with arrowhead pointing to infraorbital ethmoid air cell Haller cell which is narrowing the maxillary sinus ostium and infundibulum.

MT: middle turbinate, MS: maxillary sinus. Sagittal image with arrowhead pointing to infraorbital ethmoid air cell Haller cell. FS: frontal sinus, MS: maxillary sinus.

Ethmoid: Normal. Ethmoid: Abnormal.