Question

during the time when the action potential moves through the sarcolemma a muscle twitch is in
stimulus phase.
relaxation phase.
latent period.
isotonic period.
contraction phase.

Explanation:

The latent period of a muscle twitch is the time between the application of a stimulus and the start of muscle contraction. During this time, the action - potential is moving through the sarcolemma. It is a preparatory phase before the actual contraction begins. The stimulus phase refers to when the stimulus is first applied. The relaxation phase is after contraction. The isotonic period is related to muscle contraction with a change in length. The contraction phase is when the muscle actually shortens.

Answer:

C. latent period