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 __________.

Muscle cells initiate nerve impulses.

In the sliding filament model of muscle contraction, the myofilaments slide over each other, resulting in the overlapping of actin and __________.

Which one of the following binds calcium ions in a smooth muscle, causing contraction?

When an action potential arrives at the neuromuscular junction, the most immediate result is __________.

Continued mild or partial contraction of a muscle that keeps it healthy and ready to respond is known as muscle __________.