The "motor unit" in vertebrate skeletal muscle refers ...

[go.lag]

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.

[strangeaffliction]

I recall doing this last year, it's D, take care.