Acetylcholine is:

eversion

When muscles are not used, they shrink or

A sustained partial contraction of skeletal muscle is called muscle tone.

A muscle twitch results when the muscle is stimulated so rapidly that no evidence of relaxation is seen.

The frontal bone connects with the _____ bones

Which type of muscle tissue is striated?

Which of these events must occur first to trigger the skeletal muscle to generate an action potential and contract:

The mechanical force of contraction is generated by:

The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the: