During skeletal muscle contraction the A band decreases in size.
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Q19: Flexors increase the angle at a joint.
Q20: Each somatic motor neuron with all the
Q21: Thin filaments are composed of myosin and
Q22: Cross-bridge formation occurs when myosin heads attach
Q23: What structure is composed of protein filaments
Q25: What protein primarily makes up the thick
Q26: Myosin will not bind to actin unless
Q27: Myosin contains binding sites for _ and
Q28: What enzyme is needed to start the
Q29: The thick filament is split by a
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