Unscramble these 7 steps, and match them to what is happening in the picture

ca2+ pumps restore ca2+ to sr  relaxation!

action potential travels down the axon in response to nerve stimulus.

myosin binds to actin

action potential causes ca2+ release from sr

myosin pulls actin chain along and sarcomere shortens  contraction!

action potential travels down the t tubule and into sarcoplasmic reticulum (sr)

ca2+ binds to troponin. troponin moves tropomyosin uncovering myosin binding site on actin