Cytoplasmic filaments (10nm diameter: intermediate filaments) inserted into desmosomes.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Tonofibrils — are cytoplasmic protein structures in epithelial tissues that converge at desmosomes and hemidesmosomes. They are made of keratin (a type of intermediate filament in the cytoskeleton) tonofilaments. Tonofilaments are keratin intermediate… …   Wikipedia

  • Stratum spinosum — Le Stratum spinosum est un tissu épidermique constitué de cellules moins hautes que la couche basale, les cellules cubiques. Sommaire 1 Description 2 Pathologies 3 Voir aussi 3.1 A …   Wikipédia en Français

  • tonofibril — One of a system of fibers found in the cytoplasm of epithelial cells. See cytoskeleton, tonofilament. SYN: epitheliofibril, tenofibril. * * * tono·fi·bril fīb rəl, fib n a thin fibril made up of tonofilaments * * * n. a tiny fibre occurring in… …   Medical dictionary

  • Stratum granulosum — Le Stratum granulosum (appelé aussi couche granuleuse) constitue la dernière couche de cellules nucléées de l épiderme. Elle est formée, selon l importance de la kératinisation, de 1 à 4 assises cellulaires aplaties dont le noyau commence à… …   Wikipédia en Français

  • Épiderme (anatomie) — Cet article concerne l épiderme en tant que couche superficielle de la peau. Pour les autres sens, voir Épiderme. En anatomie, l épiderme est la couche superficielle de la peau dont la surface est formée de cellules mortes kératinisées, qui… …   Wikipédia en Français

  • desmosome — (= macula adherens junctions; spot desmosomes) Specialized cell junction characteristic of epithelia into which intermediate filaments (tonofilaments of cytokeratin) are inserted. The gap between plasma membranes is of the order of 25 30nm and… …   Dictionary of molecular biology

  • prickle cell — Large flattened polygonal cells of the stratum germinosum of the epidermis (just above the basal stem cells), that appear in the light microscope to have fine spines projecting from their surfaces; these terminate in desmosomes that link the… …   Dictionary of molecular biology

  • tonofibril — noun A structural fibril of tonofilaments found in the cytoplasm of epithelial cells …   Wiktionary

  • Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… …   Medical dictionary

  • cytoskeleton — The tonofilaments, keratin, desmin, neurofilaments, or other intermediate filaments serving to act as supportive cytoplasmic elements to stiffen cells or to organize intracellular organelles. * * * cy·to·skel·e·ton .sīt ō skel ət ən n the network …   Medical dictionary

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