definition of filaments
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filament 1. a very fine thread or threadlike structure; a fiber or fibril: filaments of gold. 2. the stalklike portion of a stamen, supporting the anther. 3. (in an incandescent lamp) the threadlike conductor, often of tungsten, that is heated to incandescence by the passage of current. 4. the heating element of a vacuum tube, resembling the filament in an incandescent lamp.
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Definition of Flower Filament Sophie Johnson. The filament of a flower is one of the male reproductive parts of the plant. When a flower opens, the filaments can be seen inside, thrusting up like stems within the flower itself. A filament is topped by the anther. Together the anther and filament make up the flower's stamen.
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Microtubules and Filaments The cytoskeleton of a cell is made up of microtubules, actin filaments, and intermediate filaments. These structures give the cell its shape and help organize the cell's parts. In addition, they provide a basis for movement and cell division.
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intermediate filament Medical definition of intermediate filament: any of a class of usually insoluble cellular protein fibers (as cytokeratin or a neurofilament) composed… any of a class of usually insoluble cellular protein fibers (as cytokeratin or a neurofilament) composed of various fibrous polypeptides that…
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Medical Definition of Cilia Definition of Cilia. Cilia: The fine hairlike projections from certain cells such as those in the respiratory tract that sweep in unison and help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion. Cilia is the plural of cilium, a Latin word referring to the edge of the eyelid and, much later, to the eyelashes. Cilia came to be known fine hairlike projections from cells.
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E-File Kentucky Taxes and Get a Fast Tax Refund E-File Kentucky Taxes and Get a Fast Tax Refund KY requires people who reside and work in the state to file taxes in Kentucky under certain circumstances. In essence, some people must file while others are exempt from having to claim their income. The people who are exempt from filing a Kentucky tax return are those individuals whose incomes fall below the amount stipulated by the state. For example, a person whose modified gross income is $11,670 or less does not have to file a return.
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Galaxy filament Galaxy filament. 615 pages on this wiki. In physical cosmology, filaments are the largest known structures in the universe, thread-like structures with a typical length of 50 to 80 megaparsecs h that form the boundaries between large voids in the universe.alaxy filament. 615 pages on this wiki. In physical cosmology, filaments are the largest known structures in the universe, thread-like structures with a typical length of 50 to 80 megaparsecs h that form the boundaries between large voids in the universe.
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Muscle Contraction When a motor neuron stimulates a muscle fiber, overlapping thick and thin filaments slide along one another and sarcomeres shorten. The combined shortening of many sarcomeres in many muscle fibers results in contraction of the whole muscle.hick Filaments and its purpose. Thick filaments in a muscle fiber are made of many molecules of the protein myosin. Each myosin molecule has a fibrous tail region and a globular head. For clarity, only one head is shown here. Thin filaments are twisted chains made of the globular protein actin.
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- Structure of intermediate filament. Intermediate filaments (IFs) are cytoskeletal components found in the cells of vertebrate animal species, and perhaps also in other animals, fungi, plants, and unicellular organisms. They are composed of a family of related proteins sharing common structural and sequence features.
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- Synonyms: cytokeratin filaments. The definition information for keratin filaments is provided by Stedman's. You can search our medical dictionary here. Stedman's, part of Lippincott Williams & Wilkins, provides a comprehensive line of health-science publications for healthcare professionals and medical students.
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fibril Anatomy A threadlike fiber or filament, such as a myofibril or neurofibril, that is a constituent of a cell or larger structure. [New Latin fibrilla, diminutive of Latin fibra, fiber.] fi′bril·lar (-lər), fi′bril·lar′y (-lĕr′ē) adj. fi′bril·lose′ (-lōs′) adj.
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cytoskeleton The internal framework of a eukaryotic cell, composed of protein filaments that provide structural support and drive the movement of the cell and its internal components, typically divided into three categories (microfilaments, intermediate filaments, and microtubules) based on the diameter and composition of the filaments.
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Anatomy: Ch. 11 myosin filaments. Type of myofilaments. Each is made of several hundred molecules of a protein called myosin. A myosin molecule is shaped like a golf club, with two chains intertwined to form a shaftlike tail and a double globular head projecting from it at an angle.
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filament A fine or very thin thread or fiber: filaments of cloth; filaments of flax. 2. A slender or threadlike structure or part, especially: a. A fine wire that is heated electrically to produce light in an incandescent lamp.
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filament A fine or slender thread, wire, or fiber. The part of a stamen that supports the anther of a flower; the stalk of a stamen. See more at flower. A fine wire that gives off radiation when an electric current is passed through it, usually to provide light, as in an incandescent bulb, or to provide heat, as in a vacuum tube. A wire that acts as the cathode in some electron tubes when it is heated with an electric current.
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fimbria fim·bri·a. n. pl. fim·bri·ae (-brē-ē′). A fringelike part or structure, as at the opening of the fallopian tubes. [Late Latin. , fringe, back-formation from Latin. , threads, fringe .]. fim′bri·al adj.
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Fiber A bundle of optical fibers. Fiber or fibre (from the Latin fibra) is a natural or synthetic string used as a component of composite materials, or, when matted into sheets, used to make products such as paper, papyrus, or felt.
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Cilium Cilium. Definition. noun, plural: cilia. (biology). Microscopic, hair-like projection on the surfaces of some cells and of certain organisms. (botany). Any of the hair forming a fringe along the margin or edge of a plant structure, e.g. of a leaf. (anatomy). The eyelash.Supplement.efinition. noun, plural: cilia. (biology). Microscopic, hair-like projection on the surfaces of some cells and of certain organisms. (botany). Any of the hair forming a fringe along the margin or edge of a plant structure, e.g. of a leaf. (anatomy). The eyelash. Supplement.
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Microtubule Sections. Definition. The cytoskeleton is a network of filamentous and tubular protein structures that support cell shape, intracellular compartmentalisation and trafficking, cell migration and cell division. The key constituents of the cytoskeleton are actin filaments, microtubules and intermediate filaments. News and Comment.
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Myofibril Thick filaments consist primarily of the protein myosin, held in place by titin filaments. Myosin is responsible for force generation. It is composed of a globular head with both ATP and actin binding sites, and a long tail involved in its polymerization into myosin filaments.
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axial filament The central filament of a flagellum or cilium; with the electron microscope it is seen as a complex of nine peripheral diplomicrotubules and a central pair of microtubules. Synonym(s): axoneme (2) . A filament forming the central axis of the flagellum of a spermatozoon. See also: filament.
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Cytoskeleton Microfilaments are composed of linear polymers of G-actin proteins, and generate force when the growing (plus) end of the filament pushes against a barrier, such as the cell membrane. They also act as tracks for the movement of myosin molecules that attach to the microfilament and walk along them.
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microfilament microfilament definition: nounAny of the actin-containing filaments that are found in the cytoplasm of eukaryotic cells and are involved in generating cell movement, providing structural support, and organizing internal cell components. Microfilaments, alon...
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Microfilaments MICROFILAMENTS Microfilaments-Microfilaments are solid rods made of globular proteins called actin. These filaments are primarily structural in function and are an important component of the cytoskeleton.icrofilaments can also carry out cellular movements including gliding, contraction, and cytokinesis. Microfilaments-Microfilaments are solid rods made of globular proteins called actin. These filaments are primarily structural in function and are an important component of the cytoskeleton.
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The Sarcomere and Sliding Filaments in Muscular Contraction: Definition and Structures Thick filaments contain myosin, while thin filaments contain actin. Actin and myosin collectively are referred to as the contractile proteins, which cause muscle shortening when they interact with each other.
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