![]() 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. Increased pressure within the nasal cavity, as seen during sneezing, for example, leads to temporary exophthalmos. This not only deprives life of some of its pleasures, but can also be dangerous, as when a person fails to smell smoke, gas, or spoiled food.įracture of the lamina papyracea, the lateral plate of the ethmoid labyrinth bone, permits communication between the nasal cavity and the ipsilateral orbit through the inferomedial orbital wall, resulting in orbital emphysema. Ethmoid bone is labeled with whiteīlows to the head can also shear off the olfactory nerves that pass though the ethmoid bone and cause anosmia, an irreversible loss of the sense of smell and a great reduction in the sense of taste (most of which depends on smell). Such injuries are often evidenced by leakage of cerebrospinal fluid into the nasal cavity, and may be followed from the nasal cavity to the brain. The force of a blow can drive bone fragments through the cribiform plate into the meninges or brain tissue. The ethmoid bone is very delicate and is easily injured by a sharp upward blow to the nose, such as a person might suffer by striking an automobile dashboard in a collision. eleven of the face-the two nasals, two maxillae, two lacrimals, two palatines, two inferior nasal conchae, and the vomer.four of the cranium-the frontal, the sphenoid, and the two sphenoidal conchae.The ethmoid articulates with fifteen bones: ![]() the vertical Perpendicular plate ( lamina perpendicularis), which is part of the nasal septum.the horizontal Cribriform plate ( lamina cribrosa), part of the cranial base.The cubical bone is lightweight due to a spongy construction. As such, it is located at the roof of the nose, between the two orbits. The ethmoid bone (from Greek ethmos, "sieve") is a bone in the skull that separates the nasal cavity from the brain. ![]() Risk calculators and risk factors for Ethmoid boneĮditor-In-Chief: C. US National Guidelines Clearinghouse on Ethmoid boneĭirections to Hospitals Treating Ethmoid bone Ongoing Trials on Ethmoid bone at Clinical Ĭlinical Trials on Ethmoid bone at Google ![]() Articles on Ethmoid bone in N Eng J Med, Lancet, BMJ ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |