In the process of muscle contraction, what happens when ATP binds to the myosin head?
1
The myosin head releases calcium ions and returns to its resting position.
2
ATP hydrolysis causes the myosin head to attach to the actin filament.
3
ATP binds to the myosin head, breaking the cross-bridge and allowing the myosin to detach from actin.
4
ATP facilitates the release of acetylcholine at the neuromuscular junction.