The "Motor Unit" in Vertebrate Skeletal Muscle Refers to

question 70

Multiple Choice

The "motor unit" in vertebrate skeletal muscle refers to

• A) one actin binding site and its myosin partner.
• B) one sarcomere and all of its actin and myosin filaments.
• C) one myofibril and all of its sarcomeres.
• D) one motor neuron and all of the muscle fibers on which it has synapses.
• E) an entire muscle.

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