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.

myofilaments

actin and myosin (i.e. actomyosin basic contractile unit of muscle tissue)

myofilaments (mī″·ō·fiˑ·l·mnts),

n.pl bundles of threads called myosin and actin that comprise individual fibers in a striated muscle.
References in periodicals archive ?
By 4 days postfertilization (24 hours after the end of cephalopodial rotation), occasional aggregations of myofilaments can be resolved within some of these pedal cells.
In both fiber types, the mitochondria are surrounded by loosely packed myofilaments [ILLUSTRATION FOR FIGURE 1B, C OMITTED].
Sacromeres were evident in the peripheral cytoplasm of tail muscle cells [ILLUSTRATION FOR FIGURE 5A, B OMITTED]; however, there was no evidence for the development of myofilaments in the head region of ME larvae in the more than 300 sections that were examined [ILLUSTRATION FOR FIGURE 5C, D OMITTED].
These myonemes were composed of closely packed bundles of myofilaments, aggregated at one side, and of a myofilament-free area at the other side.
The absence of myofilaments and AChE activity in M.
Potassium chloride insoluble myofilaments in vertebrate smooth muscle cells.
Each fiber is defined by a distinct sarcolemma and is tightly packed with myofilaments.
Given their weak degree of differentiation, myoepithelial/meta-plastic carcinomas are best examined with a panel that includes all antibodies to broad-spectrum keratins, all high-molecular-weight keratins, p63, as well as antibodies to myofilaments (5).
ischemia hypoxia, there is a substantial rise in cytosolic Na [sup]+ level, and the NCX transportation can be reversed to be a Ca [sup]2+ influx mode as seen in the constrictions of myofilaments.
Iridescence in skeletal muscle sections partially depends on the parallel array of myofibrils and myofilaments forming the sarcomeres, shown in a scanning electron micrograph (E) and a transmission electron micrograph (F) (impregnation with osmium tetroxide, original magnification X 500 [E]; uranyl acetate and lead citrate, original magnification X8500 [F]).
Degeneration is present within the first few hours after injury, and it is characterized by myofilaments and sarcolemma disruption, cell necrosis and hematoma formation followed by the inflammatory response (Sverzut and Chimelli, 1999; Tidball, 2005; Jarvinen et al.