Put the following events of excitation-contraction coupling in the correct order. a. Calcium ions bind to troponin molecules on the actin myofilaments. open choices for ranking
b. The T tubules carry the action potential to the interior of the muscle fiber. open choices for ranking
c. The troponin-tropomysin complex moves, exposing active sites on the actin myofilaments.
c. Calcium ions are released into the sarcoplasm. open choices for ranking
d. A nerve impulse causes ACh to be released at a neuromuscular junction.
e. The heads of myosin myofilaments bind to sites on the actin myofilaments, forming cross-bridges.