Which of the Following Statements Best Explains How Tetanus Can

question 1

Multiple Choice

Which of the following statements best explains how tetanus can be generated in a skeletal muscle,given the all-or-none nature of action potentials?

• A)During a single action potential in a skeletal muscle, there is not enough time for all of the calcium in the sarcoplasmic reticulum to diffuse into the cytosol and bind to troponin
• B)Skeletal muscle has no absolute refractory period
• C)Skeletal muscle has a much longer absolute refractory period than does a motor neuron
• D)During a single action potential in a skeletal muscle, there is not enough time for maximal tension to develop before the Ca-ATPase begins sequestering calcium ions
• E)Both during a single action potential in a skeletal muscle, there is not enough time for all of the calcium in the sarcoplasmic reticulum to diffuse into the cytosol and bind to troponin and skeletal muscle has a much longer absolute refractory period than does a motor neuron are correct

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