Events that link the action potentials on the sarcolemma to activation of the myofilaments, thereby preparing them to contract represent which of the following phases of muscle contraction and relaxation?

The RMP of a myofiber is _______________; threshold is reached at ______________; full depolarization is at __________________; repolarization returns the membrane potential to ________________.

The presence of the nodes of Ranvier speeds up the velocity of conduction along the axon.

A traveling wave of excitation down the axon membrane is known as a(n) _____________________________.

Cross bridges occur when myosin heads combine with the binding sites on actin.

What is the proper sequence of an action potential?

Which is NOT a characteristic of an action potential?  

If a stimulus has enough intensity and strength in producing a local potential, where does the action potential or impulse actually begin?

Which statement is TRUE of muscle contraction?

Which letter is pointing to the vastus medius?