This is a diagram of the neuromuscular junction.  Label “A” is the neuron.  Label “B” is the muscle cell.  What type of transport occurs to control ion flow through the neurolemma as shown in #8 of this diagram?  

Which letter is pointing to the rhomboids?  

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

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

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

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?  

Which statement is TRUE of muscle contraction?