olfactory organs definition
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OLFACTORY ORGAN • OLFACTORY ORGAN (noun). The noun OLFACTORY ORGAN has 1 sense: 1. the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals. Familiarity information: OLFACTORY ORGAN used as a noun is very rare. Dictionary entry details.
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- Olfactory receptor cells are bipolar neurons that are not replaced when damaged. Chemicals are received by specific plasma membrane receptors in the olfactory receptor cells. Olfactory receptors do not adapt quickly. The main areas of the brain that interpret the sense of smell lie in the temporal and frontal lobes.
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- Olfaction (the sense of smell) is an important function of the nasal cavity and skull base that has become increasingly investigated due to its role in behavior, cognition, disease severity, quality of life (QOL), and sinonasal disease. Smelling is critical and important to our daily lives.
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sense organ sense organ. In animals, an organ or part that is sensitive to a stimulus, as of sound, touch, or light. Examples of sense organs include the eye, ear, and nose, as well as the taste buds on the tongue.ar-the sense organ for hearing and equilibrium. organ of hearing-the part of the ear that is responsible for sensations of sound. inner ear, internal ear, labyrinth-a complex system of interconnecting cavities; concerned with hearing and equilibrium.
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SENSORY ORGANS ANATOMY Sensory organs. http://www.medicalook.com. SEARCH. Sensory organs are very highly developed and specialized organs that are an extension of the central nervous system, with a sole function to take in information and relate it to the brain.he brain’s interpretations of the sensations determined by the sensory system are called perception. Perception is the brain’s method of determining whether the information sent to the brain is pleasurable, painful, dangerous, or joyful. These perceptions explain to the body how to respond to the stimuli.
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- Anatomy: Structure of the Olfactory System. The olfactory system consists of olfactory receptors and the olfactory bulb. The olfactory receptors are located in the olfactory mucosa, part of a region in the nose called the olfactory epithelium.The olfactory bulb is a part of our brain that is connected by nerves to the olfactory epithelium.natomy: Structure of the Olfactory System. The olfactory system consists of olfactory receptors and the olfactory bulb. The olfactory receptors are located in the olfactory mucosa, part of a region in the nose called the olfactory epithelium.
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- The olfactory bulb (bulbus olfactorius) is a neural structure of the vertebrate forebrain involved in olfaction, or the sense of smell.he accessory olfactory bulb (AOB), which resides on the dorsal-posterior region of the main olfactory bulb, forms a parallel pathway independent from the main olfactory bulb.
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Vomeronasal organ The vomeronasal organ (VNO), or the Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals.It lies close to the vomer and nasal bones. It was discovered by Frederik Ruysch prior to 1732 and later by Ludwig Jacobson in 1813.he VNO is the first stage of the accessory olfactory system and contains sensory neurons that detect chemical stimuli. The axons from these neurons project to the accessory olfactory bulb, which targets the amygdala and bed nucleus of the stria terminalis, which in turn project to the hypothalamus.
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What is the Olfactory Bulb? The olfactory bulb is a part of the limbic system. Within the brain, the bulb is located in the forebrain, though in humans it sits at the bottom while in other vertebrates it sits at the very front.A bony structure called the cribiform plate cradles and protects it, and separates it from the nasal cavity.he process is similar for the accessory olfactory bulb, except the input being processed is pheremones instead of odors. A separate sensory organ located in the nose, the vomeronasal organ, detects pheremones and passes the signal via axons to the glomeruli in the accessory bulb.
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- The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures about 3 square centimeters (on each side) and lies on the roof of the nasal cavity about 7 cm above and behind the nostrils.he olfactory nerves go through the cribriform plate and terminate on the dendrites of the mitral cells located in the glomeruli of the olfactory bulb. The apical poles of these neurons are covered with non-motile cilia, with the plasma membrane containing odorant-binding proteins acting as olfactory receptors.
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Olfactory epithelium [edit on Wikidata] The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures about 9 cm2 (3 centimeters by 3 centimeters) and lies on the roof of the nasal cavity about 7 cm above and behind the nostrils.
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olfaction smell. the sense that enables one to perceive odors; it depends on the stimulation of sense organs in the nose by small particles carried in inhaled air. It is important not only for the detection of odors, but also for the enjoyment of food, since flavor is a blend of taste and smell.
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- Olfactory receptors expressed in the cell membranes of olfactory receptor neurons are responsible for the detection of odor molecules.Activated olfactory receptors are the initial player in a signal transduction cascade which ultimately produces a nerve impulse which is transmitted to the brain.xpression [edit]. In vertebrates, the olfactory receptors are located in both the cilia and synapses of the olfactory sensory neurons and in the epithelium of the human airway. In insects, olfactory receptors are located on the antennae and other chemosensory organs.
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Olfactory perception Olfaction - Accessory olfactory system. 1  Many animals, including most mammals and reptiles, but not humans, have two distinct and segregated olfactory systems: a main olfactory system, which detects volatile stimuli, and an accessory olfactory system, which detects fluid-phase stimuli.
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- The Olfactory Membrane. The olfactory membrane is a thick yellow-brown structure, about one inch square, located in the upper part of each nasal cavity. It consists of about one hundred million smell receptor cells, which are surrounded by supporting cells.The smell receptor cells have an olfactory vesicle bearing cilia, which project into the mucus that covers the smell membrane.Chemicals in the air react with the cilia and stimulate the receptor cells.he smell receptor cells have an olfactory vesicle bearing cilia, which project into the mucus that covers the smell membrane. Chemicals in the air react with the cilia and stimulate the receptor cells.
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The Sense of Smell: A Powerful Sense The olfactory bulb is one of the structures of the limbic system and a very ancient part of the brain. As mentioned in the previous description of the olfactory process, the information captured by the sense of smell goes from the olfactory bulb to other structures of the limbic system.he sense of smell is a strong sense for identification purposes and can have a strong impact in your brain because it is such an integral part of it (to the point that strong chemical smells can definitely elicit seizures).
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What is the function of Olfactory Bulb ? Olfactory bulb is a special organ that is located in forebrain of all vertebrates and accepts neural inputs related to odor which is identified by the nasal cavity cells.
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- Expression [edit]. In vertebrates, the olfactory receptors are located in both the cilia and synapses of the olfactory sensory neurons and in the epithelium of the human airway. In insects, olfactory receptors are located on the antennae and other chemosensory organs.xpression [edit]. In vertebrates, the olfactory receptors are located in both the cilia and synapses of the olfactory sensory neurons and in the epithelium of the human airway. In insects, olfactory receptors are located on the antennae and other chemosensory organs.
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Vomeronasal organ Vomeronasal organ. The vomeronasal organ (VNO), or the Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals. It lies close to the vomer and nasal bones. It was discovered by Frederik Ruysch prior to 1732 and later by Ludwig Jacobson in 1813. This organ is the sense organ involved in the flehmen response in mammals.
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Olfactory EpitheliumTissues The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures about 3 square centimeters (on each side) and lies on the roof of the nasal cavity about 7 cm above and behind the nostrils.he olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures about 3 square centimeters (on each side) and lies on the roof of the nasal cavity about 7 cm above and behind the nostrils.
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OLFACTORY ORGAN chemoreceptor (a sensory receptor that responds to chemical stimuli). Meronyms (parts of olfactory organ): turbinal; turbinate; turbinate bone (any of the scrolled spongy bones of the nasal passages in man and other vertebrates).
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olfactory receptor cell olfactory receptor cell in Medicine. olfactory receptor cell n. Any of the specialized, nucleated cells of the mucous membrane of the nose that serve as the receptors for smell.
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Vomeronasal organ The vomeronasal organ (VNO), or the Jacobson's organ, is an auxiliary olfactory sense organ that is found in many animals.It lies close to the vomer and nasal bones. It was discovered by Frederik Ruysch prior to 1732 and later by Ludwig Jacobson in 1813.This organ is the sense organ involved in the flehmen response in mammals. The VNO is the first stage of the accessory olfactory system and contains sensory neurons that detect chemical stimuli.his organ is the sense organ involved in the flehmen response in mammals. The VNO is the first stage of the accessory olfactory system and contains sensory neurons that detect chemical stimuli.
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Olfactory system The olfactory system is the sensory system used for olfaction, or the sense of smell. Most mammals and reptiles have two distinct parts to their olfactory system: a main olfactory system and an accessory olfactory system.he olfactory system is the sensory system used for olfaction, or the sense of smell. Most mammals and reptiles have two distinct parts to their olfactory system: a main olfactory system and an accessory olfactory system.
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Anatomy Olfactory Organs. contain olfactory epithelium with olfactory receptors (neurons sensitive to chemicals dissolved in the overlying mucus), supporting cells, and basal (stem) cells. Their surfaces are coated with the secretions of the olfactory glands.
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The Olfactory Nerve The Olfactory Nerve is the first of the Twelve Cranial Nerves. It consists of both afferent and efferent sensory fibers. The word Afferent means toward the centre, as in from a peripheral area of a limb to the central nervous system. The word Efferent is the opposite of Afferent, meaning away from the centre and toward the periphery which is when the stimulus is carried back to the brain from a peripheral area.