After acetylcholine crosses the synaptic cleft and binds to

Last updated: 8/2/2022

After acetylcholine crosses the synaptic cleft and binds to the acetylcholine receptor, what is the very next step that occurs at the neuromuscular junction that leads to depolarization? Sodium pumps in the sarcolemma switch on and sodium rushes into the muscle cell, causing the interior of the sarcolemma to go from positive to negative Sodium channels in the sarcolemma open and sodium rushes into the muscle cell, causing the interior of the sarcolemma to go from negative to positive Calcium channels in the sarcolemma open up and calcium rushes into the muscle cell, causing the interior of the sarcolemma to go from negative to positive Calcium is released by the sarcoplasmic reticulum, calcium binds to troponin and the muscle contracts