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- noun Plural form of
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We learned the names of the bones making up the axial and appendicular portions of the skeleton We considered the tissues of the bones and joints (compact bone, spongy bone, cartilage, fibrous connective tissue) We learned the names of various muscles and how they operate when we intentionally move our bones We can't understand how skeletal muscles contract and move the bones until we study skeletal muscles at the cellular level A muscle cell is suited to its task because it contains contractile organelles called myofibrils
Striated muscle tissue consists of bundles of fibers called fasiculi made up of long nucleated cells with myofibrils in alternating dark and light bands that give them a striped appearance.
Calcium dissociation from fast skeletal troponin was slowed by CK-2017357, consistent with its activating effect on myofibrils at intermediate (but not high and low) calcium concentrations.
The authors concluded that CK-2017357 selectively sensitizes the ATPase activity of skinned fast skeletal myofibrils to calcium, without significant activation of myofibrils from slow skeletal or cardiac tissue.
The resulting cells form unhealthy myofibrils and progressively lose their rhythmic beating.
Desmin, a muscle-specific, intermediate filament protein common in myofibrils
ALS The method of defibrilation ● Electrical defibrillation: passing an electrical current through a fibrillating heart, and causing synchronous depolarization the disorganized contracting myofibrils at once, and allowing for uniform repolarization and subsequent organized cardiac electromechanical activity.