Neural Control of Movement

Do people really ever think about the work our body does for even the tiniest movements? When doing strenuous activities like climbing, a lot is happening inside the muscle. It happens all the way down into the muscle fiber. At the axon ending, neurons leave the vesicle and travel through the synapse, following the sarcolemma or muscle membrane, and goes down the T tubule, then finally, the calcium ions move into the SR and myosin binds to actin, causing a muscle contraction. This simple process allows for very small, to extreme movements of the human body. When a contraction occurs, thick and thin filaments move closer together, decreasing the length in one sacromere.