Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units.
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Q13: A skeletal muscle contracts with varying force
Q14: During isometric contraction, the energy used appears
Q15: The force of muscle contraction is controlled
Q16: The thin filaments (actin) contain a polypeptide
Q17: Although there are no sarcomeres, smooth muscle
Q19: A motor neuron and all the muscle
Q20: Excitability is the ability of a cell
Q21: What structure in skeletal muscle cells functions
Q22: Which of the following is a factor
Q23: During vigorous exercise, there may be insufficient
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