The final "go" signal for skeletal muscle contraction is __________.

The space between the axon terminus of the neuron and the sarcolemma of the muscle fiber is the __________.

During the phase of excitation-contraction coupling of skeletal muscle, what occurs immediately after the action potential spreads down the T tubule?

The alternating contraction and relaxation of opposing layers of smooth muscle is referred to as __________.

What is the ion released from the terminal cisternae that combines with troponin and removes the blocking action of tropomyosin, resulting in the formation of cross bridges?

The type of muscle contraction in which the muscle fibers produce increased tension although the muscle neither shortens nor lengthens is called __________.