A single twitch has three phases: WHAT IS THE CORRECT ORDER…
A single twitch has three phases: WHAT IS THE CORRECT ORDER OF THESE? 1 –Relaxation phase Ca2+ levels in cytosol fall Cross-bridges detach and tension decreases 2 –Latent period Action potential moves across sarcolemma SR releases Ca2+ 3 Contraction phase Calcium ions bind to troponin and cross-bridges form Tension builds to a peak