myofilament


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Related to myofilament: myofibril, thin filaments

myofilament

 [mi″o-fil´ah-ment]
any of the ultramicroscopic threadlike structures composing the myofibrils of striated muscle fibers.

myofilament

/myo·fila·ment/ (-fil´ah-ment) any of the ultramicroscopic threadlike structures composing the myofibrils of striated muscle fibers; thick ones contain myosin, thin ones contain actin, and intermediate ones contain desmin and vimentin.

myofilament

(mī′ə-fĭl′ə-mənt)
n.
Any of the ultramicroscopic filaments, made up of actin and myosin, that are the structural units of a myofibril.

myofilament

[mī′ōfil′ə·mənt]
Etymology: Gk, mys, L, filare, to spin
any of the numerous ultramicroscopic threadlike structures occurring in bundles in the myofibrils of striated muscle fibers. The thick filaments of myosin and the thin filaments of actin are together responsible for the contractile properties of muscle. Also present are intermediate filaments, of uncertain function. See also myofibril.

myofilament

any of the ultramicroscopic threadlike structures composing the myofibrils of striated muscle fibers.
References in periodicals archive ?
We also plan to measure the contractile properties and myofilament dimensions of the circumferential muscles from an ontogenetic series of S.
The system can be modeled by transferring the pattern of attachment sites onto a rubber membrane that has been previously stretched along the myofilament axis.
Differentiating myocytes of the LRM and ACC are recognizable in these young larvae [ILLUSTRATION FOR FIGURES 6 AND 7 OMITTED] because myofilaments can be resolved within the cytoplasm [ILLUSTRATION FOR FIGURE 8 OMITTED].
Longitudinal sections confirm the difference in width of the myofilament zone in relation to the mitochondrial core of the two circular fiber types [ILLUSTRATION FOR FIGURE 3 OMITTED].
Muscles with larger volume and physiological cross-sectional area generate more force due to the larger myofilaments contents in its myofibrils.
1992) observed the ultrastructure of autotomy-induced atrophy of muscles in the crab Carcinus maenas, such as extensive myofilament erosion and loss of organelles.
Immunohistochemical characterization of odontogenic cysts with mesenchymal and myofilament markers.
These overstretched sarcomeres have little myofilament overlap, and are likely to fail under tension and become disrupted.
Effects of isoflurane, sevoflurane, and halothane on myofilament [Ca.
After that, more channels open and calcium enters and binds to a tiny structure near the membrane; then, much more calcium explodes out of that structure into the cell's inner fluid and combines with a myofilament protein called troponin.
But unlike other positive inotropes, whose action is mediated by increased intracellular calcium, levosimendan enhances cardiac myofilament sensitivity to an unchanged concentration of calcium.
The myofilament lattice collapse in these embryos has been analyzed by immunofluorescence with antibodies to myosin A and actin.