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 , 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).
MF = muscle fiber; Z and H = actin myofilaments
junction and myosin filament band, respectively.
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.
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.
During mechanical damage to muscles, sarcomere myofilaments
are disrupted, the sarcolemma is damaged and fibers disintegrate .
Actin, myosin, and elastic myofilaments
are arranged to form organized sarcomeres within the myotubes.