Definition of Ethmoid bone. The labyrinths are first developed, ossific granules making their appearance in the region of the lamina papyracea between the fourth and fifth months of fetal life, and extending into the conchæ. As a noun; short for the ethmoid bone, a spongy bone that serves as the front floor of the skull and the roof of the nose. The ethmoid bone is only about the size of an ice cube but is very light and sponge-like in appearance that helps to form the walls of your eye socket, or orbital cavity, as well as the roof, sides, and interior of your nasal cavity. At birth, the bone consists of the two labyrinths, which are small and ill-developed. Ethmoid sinusitis is an uncomfortable condition that can be treated as well as prevented. (anatomy, bone) Of or relating to the ethmoid bone. Some birds and other migratory animals have deposits of biological magnetite in their ethmoid bones which allow them to sense the direction of the Earth's magnetic field. Ethmoid: 1. 2. Definition. 2 Anatomy. [8], This article incorporates text in the public domain from page 153 of the 20th edition of Gray's Anatomy (1918), The seven bones which articulate to form the, "Olfactory Dysfunction Predicts 5-Year Mortality in Older Adults", http://www.theregister.com/2006/11/17/the_odd_body_nose_compass/, https://en.wikipedia.org/w/index.php?title=Ethmoid_bone&oldid=992118228, Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918), Articles to be expanded from December 2013, Creative Commons Attribution-ShareAlike License, This page was last edited on 3 December 2020, at 16:19. The ethmoid sinus (one of six sets of sinuses) is part of the paranasal sinus system and is located between the nose and eyes. It is located at the roof of the nose, between the two orbits. Definition. The ethmoid bone (/ ˈ ɛ θ m ɔɪ d /; from Greek ethmos, "sieve") is an unpaired bone in the skull that separates the nasal cavity from the brain.It is located at the roof of the nose, between the two orbits.The cubical bone is lightweight due to a spongy construction. 1 Definition. Ethmoid Bone. The ethmoid bone is a bone in the skull that separates the nasal cavity from the brain. From the Greek ethmos, sieve + eidos, resemblance = like a sieve. ‘On each side of the groove the dura is rough, because of its attachment to the cribriform plate of the ethmoid bone and because it is pierced by numerous olfactory nerve bundles.’ ‘At least 1 percent of persons in the population have symptomatic nasal polyps and up to 42 percent may have asymptomatic polyps on careful examination of the middle meatus, middle turbinate and ethmoids.’ bone of the skull between the eyes and at the roof of the nose. Definition (NCI_CDISC) A light and spongy bone that is cubical in shape. The form of the sphenoid bone is often referred to as bat-shaped, wasp-shaped, or butterfly-shaped. The instrument would be inserted through a hole punched into the ethmoid bone near the nose. ethmoid bone . Ethmoid Bone. Meaning of ethmoid bone. It is located at the roof of the nose, between the two orbits. It is very small at birth and becomes walnut-sized during puberty. Learn a new word every day. The ethmoid bone consists of two masses of thin plates enclosing air cells and looks like a sieve. 1. The ethmoid bone is … Type: noun; Copy to clipboard; Details / edit; en.wiktionary.org. Ethmoid definition: denoting or relating to a bone of the skull that forms part of the eye socket and the... | Meaning, pronunciation, translations and examples ethmoid: Of, relating to, or being a light spongy bone located between the ocular orbits, forming part of the walls and septum of the superior nasal cavity, and containing numerous perforations for the passage of the fibers of the olfactory nerves. The bone of the skull between the eyes and at the roof of the nose. What does ethmoid mean? French ethmoïde, from Greek ēthmoeidēs, literally, like a strainer, from ēthmos strainer. Ethmoid Bone. Ethmoid bone is exceedingly light and spongy bone that provides the floor of the front part of the skull and the roof of the nose. The form of the sphenoid bone is often referred to as bat-shaped, wasp-shaped, or butterfly-shaped. Ethmoid definition, of or relating to a bone at the base of the cranium and the root of the nose, containing numerous perforations for the filaments of the olfactory nerve. The ethmoid bone is a small unpaired bone, located in the midline of the anterior cranium – the superior aspect of the skull that encloses and protects the brain.. Dictionary entry overview: What does ethmoid bone mean? • ETHMOID BONE (noun) The noun ETHMOID BONE has 1 sense:. Because the ethmoid bone is a complex bony structure that is centrally located in your face, it has various functions that it has to support some common everyday activities that you enjoy. From the Greek ethmos, sieve + eidos, resemblance = like a sieve. The ethmoid bone is one of the bones that make up the orbit of the eye. Translations . A square bone at the root of the nose, forming part of the cranium, and having many perforations through which the olfactory nerves pass to the nose. Anatomy Bones Skull Anatomy Brain Anatomy Medical Anatomy Human Anatomy And Physiology Anatomy Study Anatomy Art … During the first year after birth, the perpendicular plate and crista galli begin to ossify from a single center, and are joined to the labyrinths about the beginning of the second year. Medical definition of ethmoid bone: a light spongy cubical bone of the skull that is made up of thin plates and forms much of the walls of the nasal cavity and part of those of the orbits. The ethmoid bone is … Noun . The blood-brain barrier makes it extremely difficult to treat such infections, because only certain drugs can cross into the CNS. Accessed 23 Jan. 2021. The ethmoid bone is exceedingly light and spongy, and cubical in shape; it is situated at the anterior part of the base of the cranium, between the two orbits, at the roof of the nose, and contributes to each of these cavities. It is very small at birth and becomes walnut-sized during puberty. Ethmos means sieve in Greek which indicates this bone’s many perforations. [3] The ethmoid has three parts: cribriform plate, ethmoidal labyrinth, and perpendicular plate. Ethmoid bone is exceedingly light and spongy bone that provides the floor of the front part of the skull and the roof of the nose. Noun. The ethmoid bone is one of the bones that make up the orbit of the eye. The term ‘ethmoid’ originates from the Greek ‘ethmos’, meaning sieve. The development of the ethmoidal cells begins during fetal life. Both Grant (1944) and Moffat (1987) have provided useful descriptions of the human ethmoid bone. Meaning of ethmoid. definition of "ethmoid bone" Sentences Mobile. As an adjective: spongy or sievelike. The sphenoid bone of the skull base is one of the most complex bones of the body. The ethmoid bone forms part of the cranial cavity, the nasal cavity and the orbits. The ethmoid bone (from Greek ethmos, "sieve") is a bone in the skull that separates the nasal cavity from the brain.As such, it is located at the roof of the nose, between the two orbits.The cubical bone is lightweight due to a spongy construction. the bone that forms part of the nose and the eye sockets (= the bone around the eyes) Thesaurus: synonyms and related words. 2. ethmoid bone . Showing page 1. Skull, including ethmoid bone; front view. The ethmoid bone consists of two masses of thin plates enclosing air cells and looks like a sieve. The sphenoid bone of the skull base is one of the most complex bones of the body. This is reflected in its lightweight, spongy structure. bone in the skull that separates the nasal cavity from the brain. It is roughly the size and shape of an ice cube, but is only a fraction as heavy. This injury is not fatal, but can be dangerous, as when a person fails to smell smoke, gas, or spoiled food. Ethmoid Bone. Ethmoid definition, of or relating to a bone at the base of the cranium and the root of the nose, containing numerous perforations for the filaments of the olfactory nerve. The ethmoid bone consists of two masses of thin plates enclosing air cells and looks like a sieve. Slippery Words Quiz—Changing with the Times. Information and translations of ethmoid in the most comprehensive dictionary definitions resource on … 'All Intensive Purposes' or 'All Intents and Purposes'? 2. ethmoid, ethmoid bone(noun) 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 Wiktionary(0.00 / … The ethmoid sinus (one of six sets of sinuses) is part of the paranasal sinus system and is located between the nose and eyes. This injury results in anosmia (loss of smell). Noun. ethmoid bone (plural ethmoid bones) The bone of the skull between the eyes and at the roof of the nose. The porous fragile nature of the ethmoid bone makes it particularly susceptible to fractures. In this article, we shall look at the anatomy of the ethmoid bone – its … [3] In fact, people with anosmia were more than four times as likely to die in five years compared to those with a healthy sense of smell. The ethmoid bone is a small, light skull bone not visible from the outside in the region of the skull base or the tectum of the nose. The cells are variable in both size and number in the lateral mass of each of the ethmoid bones and cannot be palpated during an extraoral examination. 1. 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 Familiarity information: ETHMOID used as a noun is very rare. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths. A reduction in the ability to taste is also a side effect because it is based so heavily on smell. This is reflected in its lightweight, spongy structure. ethmoid bone definition in English dictionary, ethmoid bone meaning, synonyms, see also 'ethmoidal',ethoxide',eth',ethic'. Enrich your vocabulary with the English Definition dictionary antonym.com Word of the Day: bugbear. Ethmoid bone is exceedingly light and spongy bone that provides the floor of the front part of the skull and the roof of the nose. Orbital plate - Thin plate along lateral margin of ethmoid labyrinth - Forms part of medial wall of orbit . The cribriform plate forms the roof of the nasal cavity and also contributes to formation of the anterior cranial fossa,[4] the ethmoidal labyrinth consists of a large mass on either side of the perpendicular plate, and the perpendicular plate forms the superior two-thirds of the nasal septum. The ethmoid bone forms part of the cranial cavity, the nasal cavity and the orbits. The ethmoid bone is an anterior cranial bone located between the eyes. It is roughly the size and shape of an ice cube, but is only a fraction as heavy. translation and definition "ethmoid bone", English-German Dictionary online. The ethmoid bone is made up of four main parts. Definition of ethmoid in the Definitions.net dictionary. The cubical bone is lightweight due to a spongy construction. 2. os ethmoidale . They are divided into anterior and posterior groups. The bone of the skull between the eyes and at the roof of the nose. How to use a word that (literally) drives some pe... Do you know these earlier meanings of words? Information and translations of ethmoid bone in the most comprehensive dictionary definitions resource on the web. The ethmoid bone is exceedingly light and spongy, and cubical in shape; it is situated at the anterior part of the base of the cranium, between the two orbits, at the roof of the nose, and contributes to each of these cavities. Definition. 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