As the resistance (load) to muscle contraction increased, whathappened to the velocity of muscle contraction?
a) it increased
b) it stays the same
c) it increased dramatically and then leveled off
d) it decreased
2) how is wave summation achieved in vivo (that is, in theliving muscle)?
a) by decreasing the amount of potassium
b) by increasing the strength of a neuron’s action potential
c) by increasing the frequency of neuron firing
d) by myelinated great the neuron
