ETHMOID BONE
\ˈɛθmɔ͡ɪd bˈə͡ʊn], \ˈɛθmɔɪd bˈəʊn], \ˈɛ_θ_m_ɔɪ_d b_ˈəʊ_n]\
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one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity
By Princeton University
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one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity
By DataStellar Co., Ltd
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One of the eight bones which compose the cranium; so called, because its upper plate is pierced by a considerable number of holes. The ethmoid bone is situate at the anteÂrior, inferior, and middle part of the base of the cranium. It seems to be composed of a multitude of thin, fragile, semi-transparent laminae, which form more or less spacious cells, called the Ethmoidal labyrinth or cells, distinguished into anterior and posterior. These communicate with the nose, and are lined by a prolongation of the pituitary membrane. The ethmoid bone is constituted of compact tissue, and is surrounded by the Ethmoid suture. It is articulated with the frontal and sphenoidal bones, the cornua sphenoidalia, the superior maxillary bones, the palate bones, the ossa turbinata inferiora, the comer, the proper bones of the nose, and the lachrymal bones
By Robley Dunglison
By Willam Alexander Newman Dorland
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A cuboid-shaped b., containing within its interior a large number of cells, which assists in forming the cranium, the orbits, and the nasal fossae. It consists of a central vertical plate and of two lateral masses (the ethmoturbinals), which unite above to form the cribriform plate
By Smith Ely Jelliffe
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Collagen Induced Arthritis
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