Amuscle cell runs out of atp. even though these are cyclic reactions, what step of the cross bridge cycle given is most directly inhibited or terminated?

The correct answer of the given question above would be CROSS BRIDGE DETACHMENT. When a muscle runs out of ATP, the step of the cross bridge cycle, even though these are cyclic reactions, that is most directly inhibited or terminated is called the cross bridge detachment. Hope this answer helps. 

2hydrogen and 1 covalent