Microfilaments are the smallest filaments of the cytoskeleton. a single fibril of natural or synthetic textile fiber, of indefinite length, sometimes several miles long. Enrich your vocabulary with the English Definition dictionary How to use filament in a sentence. Definition. Sign up. Learn filament biology with free interactive flashcards. 3. For a muscle contraction to take place, there must be a stimulation first to form an impulse (action potential) from a neuron that connects to the muscle. Thin Filament. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination. filament. in a eukaryotic cell, the dynamic framework of diverse protein filaments that structurally support, organize, and move the cell and internal structures. a thin wire (usually tungsten) that is heated white hot by the passage of an electric current, a metal conductor that carries electricity over a distance, one of the parallel filaments projecting from the main shaft of a feather, filaments from a web that was spun by a spider, one of two identical strands into which a chromosome splits during mitosis, one of many contractile filaments that make up a striated muscle fiber, any of various slender filaments that function as roots in mosses and ferns and fungi etc, any of the threadlike filaments forming the mycelium of a fungus, a sterile simple or branched filament or hair borne among sporangia; may be pointed or clubbed, a specialized fungal hypha that produces conidia, fungus causing soft watery rot in fruits and vegetables and rings of dry rot around roots of sweet potatoes, a dense mass of hyphae forming a root-like structure characteristic of many fungi, a slender and greatly elongated substance capable of being spun into yarn, any of the cylindrical filaments characteristically growing from the epidermis of a mammal, a hair that does not emerge from the follicle but remains embedded in the skin (usually causing inflammation), a particular complex anatomical part of a living thing, a slender or elongated structure that supports a plant or fungus or a plant part or plant organ. filament noun [C] (WIRE) a thin thread or wire, esp. Sign up. Thin Filament Definition. Within the anther reside the microsporangia, which will ultimately develop into pollen grains. 2. A slender or threadlike structure or part, especially: a. The nuclear lamina is a dense fibrillar network inside the nucleus of an eukaryotic cell. (in an incandescent lamp) the threadlike conductor, often of tungsten, that is heated to incandescence by the passage of current. Filaments are the structural proteins of the cell. The individual motor neuron plus and the muscle fibres it stimulates, in a combination is called a motor unit. The cytoskeleton is the network of protein filaments that extends throughout the cell, giving the cell structure and keeping organelles in place. In biology, a filament is a "long chain of proteins, such as those found in hair, muscle, or in flagella ". Also used to refer to mitosis in certain unicellular fungi. Filament, in fact, can be a … A type of protein filament that interacts with actin filaments to cause cell contraction. Besides providing mechanical support, the nuclear lamina regulates important cellular events such as DNA... Full article >>> The nuclear envelope (NE) is a double lipid bilayer that encloses the genetic material in eukaryotic cells. (ˈfɪl ə mənt) n. 1. a very fine thread or threadlike structure; a fiber or fibril: filaments of gold. The first filaments were made from carbon, now they are usually made from tungsten because of its high melting point. It is composed of intermediate filaments and membrane associated proteins. The word filament is from the Latin word filum, which means "thread." Intermediate Filament Definition. Prokaryotic cells have a … There are three types of filaments: microtubules, microfilaments (known as actin filaments), and … This happens when the temperature and the pH of the water changes. In some cases, the middle lamellae of the end walls of the cells dissolve, thereby causing breakage of the filament. Learn more. sliding filament theory A proposed mechanism of muscle contraction in which the actin and myosin filaments of striated muscle slide over each other to shorten the length of the muscle fibres (see sarcomere). [>>>] filament Part of the stamen in a flower that supports the anther. Cytoskeleton definition is - the network of protein filaments and microtubules in the cytoplasm that controls cell shape, maintains intracellular organization, and is involved in cell movement. https://medical-dictionary.thefreedictionary.com/filament, "MOBI's vehicle identity standard is the first specification, Evonik, a global leader in biomaterials for medical implants, today announced the launch of a new line of RESOMER[R], But this new discovery would suggest that the intergalactic highways are also "paved with matter. filament meaning: 1. a thin thread or fibre of natural or artificial material: 2. a thin wire, especially one that…. The internal movement of cell organelles, as well as cell locomotion and muscle fiber contraction could not take place without the cytoskeleton. Axial Filament Definition: Type of flagellum (called endoflagellum) that lies in periplasmic space of spirochetes. Axial Filament Explanation: Axial filaments help spirochaetes to distinguish itself from other phyla of bacteria., to learn online microbiology courses. A fine wire that is heated electrically to produce light in an incandescent lamp. has an active site that will bind to the myosin protein on thick filaments so that it can move the thin filament during contraction. a type of cellular organization consisting of a threadlike row of cells, as found in certain algae, for example. Learn / Biology / Thin Filament. on the path to systematic vocabulary improvement. The filament begins to glow and gives off light. filament -- Long chain of proteins, such as found in hair, muscle, or in flagella. A stamen is the male reproductive organ of flowering plant species that produces pollen. Microfilaments, also called actin filaments, are polymers of the protein actin that are part of a cell’s cytoskeleton. Don't have an account yet? iBiologia provides the definition, information, Examples, and facts related to daily life science and common biology terms, including molecular biology, cell biology, genetics, ecology and more! In an incandescent light bulb, a fine wire called a filament is heated to high temperatures in a bulb that lacks oxygen to prevent the filament from catching fire as it is heated. a minute, narrow tubelike cell structure composed of a protein similar to actin, occurring singly and in bundles, involved in cytoplasmic movement and changes in cell shape. intermediate filament: n. Any of a group of protein filaments that are a component of the cytoskeleton in animal cells, are composed of a variety of proteins such as lamins and keratins, and provide structural support for the cytoplasm and nucleus. They have roles in cell movement, muscle contraction, and cell division. A muscle is a complex unit containing several muscle fasciculus. The word filament is from the Latin word filum, which means "thread." Definition & Function 2:43 composed primarily of two long chains of many globular actin proteins (G-actin) G-actin. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. 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The most widely accepted theory explaining how muscle fibers contract is called the sliding filament theory. b. When a flower opens, the filaments can be seen inside, thrusting up like stems within the flower itself. Home > Science > Biology > The Function of Intermediate Filaments The Function of Intermediate Filaments Intermediate filaments (IFs) are a type of cytoskeletal fiber found in many eukaryotic cells; they're also believed to be found in fungi and other single-celled eukaryotes, but that has not been fully accepted by scientists. [>>>] But the primary importance of the cytoskeleton is in cell motility. Small secretory structures, called nectaries, are often found at the base of the stamens; they … In case of mechanical injuries, the spirogyra filament breaks into fragments, and each fragment develops into a new filament. Source for information on sliding filament theory: A Dictionary of Biology dictionary. Inspire your inbox – Sign up for daily fun facts about this day in history, updates, and special offers. A filament is topped by the anther. thin filament. Other articles where Filament is discussed: None. …a long slender stalk, the filament, with a two-lobed anther at the tip. The filament supports the anther, which is where pollen develops. fil•a•ment. Some cellular examples include: Filaments are also highly dynamic in nature and far from a static structure that acts as a stable "scaffold" for a cell. Filament, in fact, can be a synonym for thread. It's free and takes five seconds. The stamen is comprised of an anther, which is connected to a filament (pictured below). a long slender cell or series … Protein filament, a long chain of protein subunits, such as those found in hair or muscle. They are often bundled together for strength and rigidity. According to this theory, myosin filaments use energy from ATP to “walk” along the actin filaments with their cross … Hypha, a thread-like cell in fungi and Actinobacteria. It's free and takes five seconds. The intermediate filament is defined as the cytoskeleton structural components that are present in cells of vertebrates as well as invertebrates. Together the anther and filament make up the flower's stamen. The sliding filament theory can be best explained as the following. Filament definition is - a single thread or a thin flexible threadlike object, process, or appendage : such as. Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you Choose from 500 different sets of filament biology flashcards on Quizlet. Online Shopping at SpotCost.com - New and used books like Anther and Pollen From Biology to Biotechnology 3rd edition by from Springer ISBN-10: 3-540-64986-7 ISBN-13: Full article >>> Definition of anther from Webster's New World College Dictionary. fission -- Division of single-celled organisms, especially prokaryotes, in which mitosis does not occur. Sliding Filament Theory. He has a master's degree in science education. Intermediate Filament. Learn / Biology / Intermediate Filament. Filamentation, an elongation of individual bacterial cells. 2. in an x-ray tube, the wire (cathode) that makes electrons available for interaction with the anode when it is heated to incandescence to form an electron cloud. Fragmentation happens in different ways. The stamen of a flower — the part that produces pollen — consists of a slender stalk, called a filament and an anther. Overview Of Thin Filament. 1. a delicate fiber or thread. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. the wire inside a light bulb filament noun [C] (STEM) The thin filaments are myofibrils that are composed of actin proteins and are arranged in helically to form long filaments. Part of a stamen, the male part of a flower. tropomyosin. The stalk that bears the anther in the stamen of … The filament supports the anther, which is where pollen develops. a very fine thread or threadlike structure; a fiber or fibril: filaments of gold. 'S degree in science education lies in periplasmic filament definition biology of spirochetes unicellular.! And cell Division cells, as found in certain unicellular fungi s cytoskeleton very fine thread or wire,.. A synonym for thread. bacteria., to learn online microbiology courses word... The cell structure and keeping organelles in place, the middle lamellae of cells! 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