The ethmoid bone (/ˈɛθmɔɪd/; from Ancient Greek: ἡθμός, romanized: hēthmós, lit. 'sieve') is an unpaired bone in the skull that separates the nasal cavity...

The ethmoid sinuses or ethmoid air cells of the ethmoid bone are one of the four paired paranasal sinuses. Unlike the other three pairs of paranasal sinuses...

The orbital lamina of ethmoid bone (or lamina papyracea or orbital lamina) is a smooth, oblong,[citation needed] paper-thin bone plate[citation needed]...

In the ethmoid bone, a sickle shaped projection, the uncinate process, projects posteroinferiorly from the ethmoid labyrinth. Between the posterior edge...

The perpendicular plate of the ethmoid bone (vertical plate) is a thin, flattened lamina, polygonal in form, which descends from the under surface of the...

lamina or lamina cribrosa is part of the ethmoid bone. It is received into the ethmoidal notch of the frontal bone and roofs in the nasal cavities. It supports...

neurocranium to the facial skeleton. Articulates with ethmoid bone anteriorly and basilar part of occipital bone posteriorly. It shows: Jugum sphenoidale Sulcus...

ethmoidal labyrinth or lateral mass of the ethmoid bone consists of a number of thin-walled cellular cavities, the ethmoid air cells, arranged in three groups...

facial bones of the skull. It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and...

bones (8) Occipital bone Parietal bones (2) Frontal bone Temporal bones (2) Sphenoid bone (sometimes counted as facial) Ethmoid bone (sometimes counted...

lack nasal bones, with the prefrontal bones of the orbit reaching all the way to the nostrils. Lateral wall of nasal cavity, showing ethmoid bone in position...

both arise from the ethmoid bone, of the cranial portion of the skull. Hence, these two are considered as a part of the cranial bones. It has two surfaces...

the ethmoid bone. They insert anteriorly into the frontal process of the maxilla and posteriorly into the perpendicular plate of the palatine bone. There...

fracture of one or more of the temporal, occipital, sphenoid, frontal or ethmoid bone. Basilar skull fractures are divided into anterior fossa, middle fossa...

maxilla; the posterior with the lamina papyracea of the ethmoid; the superior with the frontal bone. The inferior is divided by the lower edge of the posterior...

cartilaginous and bony septum (including the vomer bone and the perpendicular plate of the ethmoid bone), maintaining septal support with a 1.0-cm margin...

transduction. The peripheral olfactory system consists mainly of the nostrils, ethmoid bone, nasal cavity, and the olfactory epithelium (layers of thin tissue covered...

as the hyoid bone, are sometimes considered part of the facial skeleton. The ethmoid bone (or a part of it) and also the sphenoid bone are sometimes...

ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid. Irregular bones in human skeleton. (shown in red). Irregular bones...

nasal concha is a small, curved plate of bone representing a medial bony process of the labyrinth of the ethmoid bone. The superior nasal concha forms the...

and the vertical segment (sagittal plane). Nose and nasal cavities Ethmoid bone from the right side. Roof, floor, and lateral wall of left nasal cavity...

sinuses, which are formed from several discrete air cells within the ethmoid bone between the nose and the eyes. They are innervated by the ethmoidal nerves...

include the following eight bones: 1 ethmoid bone 1 frontal bone 1 occipital bone 2 parietal bones 1 sphenoid bone 2 temporal bones The ossicles (three on...

skull Lacrimal bones: contains the nasolacrimal duct, which carries fluid from the surface of the eye, to the nose Ethmoid bone: complex bone separating the...

perpendicular plate of the ethmoid bone at the top, and the vomer bone below. The floor of the nose is made up of the incisive bone and the horizontal plates...

vertical, midline upward continuation of the perpendicular plate of the ethmoid bone of the skull, projecting above the cribriform plate into the cranial...

partly obscured by the inferior end of the uncinate process of ethmoid bone. The bone window of this aperture itself is much larger, but the actual opening...

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...

medially by the uncinate process of the ethmoid bone, and laterally by the orbital plate of the ethmoid bone. The ethmoid infundibulum leads towards the maxillary...

The anterior ethmoidal foramen is a small opening in the ethmoid bone in the skull. Lateral to either olfactory groove are the internal openings of the...