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In relaxed muscle, tropomyosin, which is in held in place by troponin, blocks the myosin-binding sites on actin to prevent myosin from binding to actin. During contraction, myosin heads pull on the actin and shorten the muscle cell. This process is the sliding-filament mechanism.
Hace 22 horas · Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units. motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke, sliding of myofilaments.
Hace 22 horas · Which system puts the body into a relaxed state, termed rest and digest? Select one: a. Somatic nervous system b. Parasympathetic nervous system c. Sympathetic nervous system d. Central nervous system
Hace 22 horas · Study with Quizlet and memorize flashcards containing terms like During balance training, gluteal muscles should remain in which state to hold the body stable?, The addition of balance training to a strengthening program can enhance what?, What is the proper lower-body progression for balance training when starting with a new client ...
Hace 22 horas · When a participant enters a relaxed state of wakefulness, the researcher starts monitoring the participant's brain activity, eye movements, and muscle tension. After some time, the researcher notices small-amplitude waves of irregular frequency on the EEG monitor.
the sliding filament model of contraction states that during contraction, the thin myofilaments slide past the thick myofilaments so that actin and myosin myofilaments overlap to a greater degree. in a relaxed muscle fiber, the thick and thin myofilaments overlap only at the ends of the A band.
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