ethmoidal

There are two ethmoidal nerves on each side of the face:

These blood vessels include the sphenopalatine, anterior and posterior ethmoidal arteries.

The ethmoidal veins drain into the superior ophthalmic vein.

The groups of the ethmoidal air cells:

Above the ethmoidal crest is a narrow, horizontal groove, which forms part of the superior meatus.

It is the gloomy area beneath the lac(rimal) and ethmoidal bones in the image.

It is formed by a mucous membrane that is covering the ethmoidal crest of the maxilla.

Ethmoidal vessels can refer to:

The ethmoid has three parts: the cribriform plate, the ethmoidal labyrinth, and the perpendicular plate.

Nasal polyps are usually classified into antrochoanal polyps and ethmoidal polyps.

Anterior ethmoidal artery (from the ophthalmic artery)

The ethmoidal veins are the venae comitantes of the ethmoidal arteries.

Antrochoanal polyps are usually single and unilateral whereas ethmoidal polyps are multiple and bilateral.

The ethmoidal notch separates the two orbital plates; it is quadrilateral, and filled, in the articulated skull, by the cribriform plate of the ethmoid.

In front of the ethmoidal notch, on either side of the frontal spine, are the openings of the frontal air sinuses.

The anterior ethmoidal cells of the ethmoidal sinus open into the front part of the infundibulum as well.

Farther back in the middle line is the ethmoidal spine, bounded behind by a slight elevation separating two shallow longitudinal grooves which support the olfactory lobes.

It passes through the posterior ethmoidal foramen, with the posterior ethmoidal artery.

The margins of the notch present several half-cells which, when united with corresponding half-cells on the upper surface of the ethmoid, complete the ethmoidal air cells.

The cribriform plate of the ethmoid bone (horizontal lamina) is received into the ethmoidal notch of the frontal bone and roofs in the nasal cavities.

The hiatus semilunaris (or semilunar hiatus) is a crescent-shaped groove in the lateral wall of the nasal cavity just inferior to the ethmoidal bulla.

Nose: The ethmoidal infundibulum is the most important of three infundibula of the nose: the frontal infundibulum and the maxillary infundibulum flow into it.

Once branching from the ophthalmic artery, it passes between the upper border of the medial rectus muscle and superior oblique muscle to enter the posterior ethmoidal canal.

Antrochoanal polyps arise from the maxillary sinuses and are the much less common, ethmoidal polyps arise from the ethmoidal sinuses.

The ethmoidal air cells consist of numerous thin-walled cavities situated in the ethmoidal labyrinth and completed by the frontal, maxilla, lacrimal, sphenoidal, and palatine bones.