olfactory nerve the first cranial nerve; it is purely sensory and is concerned with the sense of smell. The nerve cell bodies are situated in the olfactory area of the mucous membrane of the nose.lfactory system. Traps smells and communicates them to the brain.d. The olfactory cilia inside the nose line the mucus membranes of the nose, and unlike most other cilia in the body, they are non-motile, remaining stationary in the nose rather than wiggling around in the mucus like the cilia which line the trachea and intestines do.
the first cranial nerve made up of about 20 bundles and concerned with the sense of smell. The cell bodies are situated in the olfactory mucous membrane of the nose. Nerve fibers lead upward through openings in the cribriform plate of the ethmoid bone and connect with the cells of the olfactory bulb. olfactory system. includes the olfactory part of the nasal mucosa, the olfactory nerves and the olfactory bulbs of the cerebrum. olfactory tract. a band of white nerve fibers visible on the ventral surface of the brain running caudally from the olfactory bulbs. Hair cells are the receptors in the olfactory epithelium that respond to particular chemicals. These cells have small hairs called cilia on one side and an axon on the other side. In humans, there are about 40 million olfactory receptors; in the German Shepherd dog, there are about 2 billion olfactory receptors. 1 This disorder is called anosmia. 2  A serious head injury can cause anosmia. 3  Most likely this results in damage to the olfactory nerves as they enter the olfactory bulb. 4  It is also possible that damage of the frontal lobes caused by a tumor or surgery can cause anosmia. 5  Elderly people often have a reduced sense of smell. Overview. The olfactory nerve is the shortest cranial nerve and is the nerve which transmits special sensory information, allowing us to have a sense of smell. It is one of two nerves that do not join with the brainstem, the other being the optic nerve.  The microscopic olfactory cilia play a very important role in the perception of smell, and they perform several other functions for the nose as well. Properly speaking, the visible nose hair is just hair, not cilia. Cilia are specialized biological structures which closely resemble hair, but on a much smaller scale. Ad. The olfactory cilia inside the nose line the mucus membranes of the nose, and unlike most other cilia in the body, they are non-motile, remaining stationary in the nose rather than wiggling around in the mucus like the cilia which line the trachea and intestines do. olfactory hair. modified cilia projecting from olfactory cells in the mucosa of the nasal olfactory area. olfactory mucosa. specialized olfactory cells in a region of nasal mucosa covering ethmoturbinates, turbinates and nasal septum. olfactory system. includes the olfactory part of the nasal mucosa, the olfactory nerves and the olfactory bulbs of the cerebrum. olfactory tract. a band of white nerve fibers visible on the ventral surface of the brain running caudally from the olfactory bulbs. “Olfactory cilia” is a fancy way of saying “nose hairs,” but is important to distinguish between the macroscopic nose hairs near the opening of the nostrils, and the microscopic hairs in the olfactory epithelium, the part of the nose which traps smells and communicates them to the brain. Ad. The olfactory cilia inside the nose line the mucus membranes of the nose, and unlike most other cilia in the body, they are non-motile, remaining stationary in the nose rather than wiggling around in the mucus like the cilia which line the trachea and intestines do. pertaining to the sense of smell. olfactory bulb. the bulblike extremity of the olfactory tract on the rostral surface of the frontal lobe of each cerebral hemisphere; it is lodged against the cribriform plate through which the olfactory nerves pass. olfactory system. includes the olfactory part of the nasal mucosa, the olfactory nerves and the olfactory bulbs of the cerebrum. olfactory tract. a band of white nerve fibers visible on the ventral surface of the brain running caudally from the olfactory bulbs. olfactory. pertaining to smell. olfactory nerve the first cranial nerve; it is purely sensory and is concerned with the sense of smell. The nerve cell bodies are situated in the olfactory area of the mucous membrane of the nose. olfactory system. includes the olfactory part of the nasal mucosa, the olfactory nerves and the olfactory bulbs of the cerebrum. olfactory tract. a band of white nerve fibers visible on the ventral surface of the brain running caudally from the olfactory bulbs. No one knows what actually causes olfactory receptors to react-it could be a chemical molecule's shape or size or electrical charge. The electrical activity produced in these hair cells is transmitted to the olfactory bulb. The information is then passed on to mitral cells in the olfactory bulb. 1 This disorder is called anosmia. 2  A serious head injury can cause anosmia. 3  Most likely this results in damage to the olfactory nerves as they enter the olfactory bulb. 4  It is also possible that damage of the frontal lobes caused by a tumor or surgery can cause anosmia. 5  Elderly people often have a reduced sense of smell.
http://medical-dictionary.thefreedictionary.com/olfactory+hair https://faculty.washington.edu/chudler/nosek.html http://teachmeanatomy.info/head/cranial-nerves/olfactory-cni/ http://www.wisegeek.com/what-are-olfactory-cilia.htm http://medical-dictionary.thefreedictionary.com/olfactory+hair http://www.wisegeek.com/what-are-olfactory-cilia.htm http://medical-dictionary.thefreedictionary.com/olfactory+hair http://medical-dictionary.thefreedictionary.com/olfactory+hair https://faculty.washington.edu/chudler/nosek.html
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