myofilaments

my·o·fil·a·ments

(mī'ō-fil'ă-ments),
The ultramicroscopic threads of filamentous proteins making up myofibrils in striated muscle. Thick ones contain myosin and thin ones mostly actin; thick and thin myofilaments also occur in smooth muscle fibers but are not regularly arranged in discrete myofibrils and thus do not impart a striated appearance to these cells.

my·o·fil·a·ments

(mī'ō-fil'ă-mĕnts)
The ultramicroscopic threads of filamentous proteins making up myofibrils in striated muscle. Thick ones contain myosin and thin ones, actin; thick and thin myofilaments also occur in smooth muscle fibers but are not regularly arranged in discrete myofibrils and thus do not impart a striated appearance to these cells.
References in periodicals archive ?
Skeletal muscles are innervated by somatic motor nerves and are composed of parallel bundles of long multinucleated fibres, which, in turn, are made up of myofilaments, namely actin, myosin and tropomyosin Skeletal muscles exhibit cross-striations under the microscope.
According to Miyaguchi et al [38], meat examined under electron microscopy showed that upon heating at 70[degrees]C for 30 min the formation of network between myofibrils and sarcoplasmic proteins resulting in the formation of a condensed and fine gel as well as denatured sarcoplasmic proteins producing porous structures between denatured myofilaments, which together caused a gel matrix good at holding water.
PKG also exerts negative inotropic effects by diminishing the L-type [Ca.sup.2+] channel currents and through the desensitization of cardiac myofilaments to [Ca.sup.2+] (13,14).
In contrast, strength training generates an increase in myofilaments of actin and myosin, which promote muscle contraction force (Jambassi Filho et al., 2010; Teixeira et al., 2011; Castoldi et al., 2013).
Medusozoans include scyphozoans, hydrozoans, and cubozoans, all of which contain muscle cells generally described as elongated cells with contractile myofilaments of either smooth or striated organization (Calgren, 1949).
As the RV stretched with fluid infusion, we assumed that the sarcomeres stretched equally and that there was a uniform orientation of the myofilaments. The assumption that the mycotes are all oriented horizontally across the direction of tension will maximise the amount of stretch seen by the myocytes along the x-axis.
The primary symptoms of DOMS are thought to be mediated by leukocytes and cytokines, which play important roles not only in clearing cell debris, but also in disrupting myofilaments, cytosolic structures, and the membrane of damaged muscles.[24]
However, in the DM and DM + SGES groups (Figures 6(b) and 6(c)), SMC was arranged in disorder with irregular nucleus, the chromatin was massive with dark staining, many large cytoplasm lysis vacuoles were distributed intracellularly, dense bodies and myofilaments were decreased, and there was swelling in the mitochondria as well as vacuolar degeneration and dissolution.
Solaro, "Peroxisome proliferator-activated receptor-a expression induces alterations in cardiac myofilaments in a pressure-overload model of hypertrophy," American Journal of Physiology--Heart and Circulatory Physiology, vol.
Actin, myosin, and elastic myofilaments are arranged to form organized sarcomeres within the myotubes.