Topics: Muscles and Movements Quiz
In the diagram of a motor unit, what is represented by the part labelled X?
A. Axon
B. Neuromuscular synapse
C. Nucleus
D. Dendrite
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When actin is pulled past the myosin filament the..
A. Sarcomere shortens
B. Muscle shortens
C. Z line shortens
D. All of the above