noun Etymology: New Latin myofibrilla, from my- + fibrilla fibril Date: 1898 any of the longitudinal parallel contractile elements of a muscle cell that are composed of myosin and actin • myofibrillar adjective

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • Myofibril — 1. Axon 2. Neuromuscular junction 3. Muscle fiber 4. Myofibril Latin myofibrilla MeSH …   Wikipedia

  • myofibril — [mī΄ə fī′brəl] n. any of a number of tiny, contractile fibrils composed of actomyosin and bundled together within a muscle cell …   English World dictionary

  • myofibril — Long cylindrical organelle of striated muscle, composed of regular arrays of thick and thin filaments, and constituting the contractile apparatus …   Dictionary of molecular biology

  • myofibril — /muy euh fuy breuhl, fib reuhl/, n. Cell Biol. a contractile fibril of skeletal muscle, composed mainly of actin and myosin. [1895 1900; MYO + FIBRIL] * * * ▪ physiology       very fine contractile fibres, groups of which extend in parallel… …   Universalium

  • myofibril — noun Cylindrical organelles, found within muscle cells, that are the contractile unit of muscles. Syn: sarcostyle …   Wiktionary

  • myofibril — One of the fine longitudinal fibrils occurring in a skeletal or cardiac muscle fiber comprising many regularly overlapped ultramicroscopic thick and thin myofilaments. SYN: muscular fibril, myofibrilla. [myo + Mod. L. fibrilla, fibril] …   Medical dictionary

  • myofibril — [ˌmʌɪə(ʊ) fʌɪbrɪl] noun any of the elongated contractile threads found in striated muscle cells …   English new terms dictionary

  • myofibril — myo·fibril …   English syllables

  • myofibril — n. one of numerous contractile filaments found within the cytoplasm of striated muscle cells. When viewed under a microscope myofibrils show alternating bands of high and low refractive index, which give striated muscle its characteristic… …   The new mediacal dictionary

  • myofibril — my•o•fi•bril [[t]ˌmaɪ əˈfaɪ brəl, ˈfɪb rəl[/t]] n. hic (lab cbl) a contractile fibril of skeletal muscle, composed mainly of actin and myosin • Etymology: 1895–1900 …   From formal English to slang

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”