Information about Olfactory Epithelium
| Olfactory epithelium | |
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| Section of the olfactory mucous membrane. | |
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| Plan of olfactory neurons. | |
| subject #223 996 | |
| MeSH | Olfactory+Mucosa |
The tissue is made of three types of cells: the olfactory receptor neurons which transduce the odor to electrical signals, the supporting cells which protect the neurons and secrete mucus, and the basal cells which are a type of stem cell that differentiate into olfactory receptor neurons to replace dead receptor neurons. The olfactory epithelium is divided into four zones from ventral to dorsal. Each olfactory receptor is expressed throughout one zone.
The olfactory epithelium can be damaged by inhalation of toxic fumes, physical injury to the interior of the nose, and possibly by the use of some nasal sprays. Because of its regenerative capacity, damage to the olfactory epithelium can be temporary but in extreme cases, injury can be permanent, leading to anosmia.
External links
Sensory system: Olfactory system/Olfaction |
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| Olfactory bulb • Olfactory nerve • Olfactory epithelium • Glomeruli • Olfactory mucosa • Olfactory receptor neurons • Mitral cells • Piriform cortex |
| Rhinencephalon • Olfactory tract • Olfactory trigone |
Histology: epithelial tissue |
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Types: Columnar (simple, stratified) -
Cuboidal (simple, stratified) -
Pseudostratified/Respiratory -
Squamous (simple, stratified) -
Transitional - Olfactory
Features: Lateral/cell-cell: Tight junction - Adherens junction - Desmosome - Gap junction Basal/cell-matrix: Basal lamina - Hemidesmosome - Focal adhesion Apical: Cilia - Microvilli - Stereocilia
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Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. Created and updated by the United States National Library of Medicine (NLM), it is used by the MEDLINE/PubMed
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epithelium is a tissue composed of a layer of cells. Epithelium lines both the outside (skin) and the inside cavities and lumen of bodies. The outermost layer of our skin is composed of dead stratified squamous, keratinized epithelial cells.
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The nasal cavity (or nasal fossa) is a large air-filled space above and behind the nose in the middle of the face.
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Function
The nasal cavity conditions the air to be received by the areas of the respiratory tract...... Click the link for more information.
Olfaction (also known as olfactics) refers to the sense of smell. This sense is mediated by specialized sensory cells of the nasal cavity of vertbrates, and, by analogy, sensory cells of the antennae of invertebrates.
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The olfactory system is the sensory system used for olfaction. 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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odor or odour (see spelling differences) is a volatilized chemical compound, generally at a very low concentration, which humans and other animals perceive by the sense of olfaction. Odors are also called smells, which can refer to both pleasant and unpleasant odors.
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Location olfactory epithelium in the nose
Function Detect traces of chemicals in inhaled air (sense of smell)
Neurotransmitter Glutamate
Morphology Bipolar sensory receptor
Presynaptic connections None
Postsynaptic connections
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Function Detect traces of chemicals in inhaled air (sense of smell)
Neurotransmitter Glutamate
Morphology Bipolar sensory receptor
Presynaptic connections None
Postsynaptic connections
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In physiology, transduction is the conversion of a stimulus from one form to another.
Transduction in the nervous system typically refers to synaptic events wherein an electrical signal, known as an action potential, is converted into a chemical one via the release of
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Transduction in the nervous system typically refers to synaptic events wherein an electrical signal, known as an action potential, is converted into a chemical one via the release of
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highly specialized aspect of its associated subject.
Please help [ improve this article] by adding more general information.
Please help [ improve this article] by adding more general information.
Mucus is a slippery secretion of the lining of the mucous membranes in the body.
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Stem cells are primal cells found in all multi-cellular organisms. They retain the ability to renew themselves through mitotic cell division and can differentiate into a diverse range of specialized cell types.
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In anatomy, the dorsum is the upper side of animals that typically run, fly or swim in a horizontal position, and the back side of animals (like humans) that walk upright. In vertebrates the dorsum contains the backbone.
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Anosmia
Classifications and external resources
ICD-10 R 43.0
ICD-9 781.1
Anosmia is the lack of olfaction, or a loss of the ability to smell. It can be either temporary or permanent.
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Classifications and external resources
ICD-10 R 43.0
ICD-9 781.1
Anosmia is the lack of olfaction, or a loss of the ability to smell. It can be either temporary or permanent.
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Yale School of Medicine at Yale University is a private medical school located in New Haven, Connecticut, U.S. It was founded in 1810 as The Medical Institution of Yale College, and formally opened in 1813. The primary teaching hospital for the school is Yale-New Haven Hospital.
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sensory system: in this case, vision, for the visual system. ]]
A sensory system is a part of the nervous system responsible for processing sensory information.
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A sensory system is a part of the nervous system responsible for processing sensory information.
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The olfactory system is the sensory system used for olfaction. Most mammals and reptiles have two distinct parts to their olfactory system: a main olfactory system and an accessory olfactory system.
..... Click the link for more information.
..... Click the link for more information.
Olfaction (also known as olfactics) refers to the sense of smell. This sense is mediated by specialized sensory cells of the nasal cavity of vertbrates, and, by analogy, sensory cells of the antennae of invertebrates.
..... Click the link for more information.
..... Click the link for more information.
The olfactory bulb is a structure of the vertebrate forebrain involved in olfaction, the perception of odors.
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Anatomy
In most vertebrates, the olfactory bulb is the most rostral (forward) part of the brain...... Click the link for more information.
The olfactory nerve, or cranial nerve I, is the first of twelve cranial nerves. The specialized olfactory receptor neurons of the olfactory nerve are located in the olfactory mucosa of the upper parts of the nasal cavity.
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glomerulus (plural glomeruli) in olfaction is a structure in the olfactory bulb. It is made up of a globular tangle of axons from the olfactory receptor neurons in the olfactory epithelium and dendrites from the mitral cells, tufted cells, and other cell types.
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The olfactory mucosa is an organ made up of the olfactory epithelium and the mucosa, or mucus secreting glands, behind the epithelium. The mucus protects the olfactory epithelium and allows odors to dissolve so that they can be detected by olfactory receptor neurons.
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Location olfactory epithelium in the nose
Function Detect traces of chemicals in inhaled air (sense of smell)
Neurotransmitter Glutamate
Morphology Bipolar sensory receptor
Presynaptic connections None
Postsynaptic connections
..... Click the link for more information.
Function Detect traces of chemicals in inhaled air (sense of smell)
Neurotransmitter Glutamate
Morphology Bipolar sensory receptor
Presynaptic connections None
Postsynaptic connections
..... Click the link for more information.
Mitral cells are neurons that are part of the olfactory system. They are located in the olfactory bulb in the mammalian central nervous system. They receive information from the axons of olfactory receptor neurons, forming synapses in neuropils called glomeruli.
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In anatomy of animals, the piriform cortex, or pyriform cortex is a region in the brain. The piriform cortex is part of the rhinencephalon situated in the telencephalon.
The function of the piriform cortex relates to olfaction, which is the perception of smells.
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The function of the piriform cortex relates to olfaction, which is the perception of smells.
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In animal anatomy, the rhinencephalon is a part of the brain involved with olfaction.
Some references classify other areas of the brain related to perception of smell as rhinencephalon, but the areas of human brains that receive fibers strictly from the olfactory
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Some references classify other areas of the brain related to perception of smell as rhinencephalon, but the areas of human brains that receive fibers strictly from the olfactory
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The olfactory tract is a narrow white band, triangular on coronal section, the apex being directed upward.
It lies in the olfactory sulcus on the inferior surface of the frontal lobe, and divides posteriorly into two striæ, a medial and a lateral.
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It lies in the olfactory sulcus on the inferior surface of the frontal lobe, and divides posteriorly into two striæ, a medial and a lateral.
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The olfactory trigone is a small triangular area in front of the anterior perforated substance.
Its apex, directed forward, occupies the posterior part of the olfactory sulcus, and is brought into view by throwing back the olfactory tract.
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Its apex, directed forward, occupies the posterior part of the olfactory sulcus, and is brought into view by throwing back the olfactory tract.
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Histology (from the Greek ἱστός) is the study of tissue sectioned as a thin slice, using a microtome. It can be described as microscopic anatomy.
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epithelium is a tissue composed of a layer of cells. Epithelium lines both the outside (skin) and the inside cavities and lumen of bodies. The outermost layer of our skin is composed of dead stratified squamous, keratinized epithelial cells.
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Columnar epithelia are epithelial cells whose heights are at least twice their width. Columnar epithelia are divided into simple (or unilayered), and stratified (or multi-layered).
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ARSEARSE'''
Simple columnar epithelia are further divided into two categories: nonciliated and ciliated.
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Simple columnar epithelia are further divided into two categories: nonciliated and ciliated.
Nonciliated
Nonciliated columnar epithelia..... Click the link for more information.
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