Movement is key to every aspect of our lives. From breathing to walking, writing, or frowning, each behaviour is controlled by the motor system. So, understanding how movement is generated is an important step to understanding behaviour.

Despite being so ‘natural’, the generation of movement is a very complex task. Depending on the goal, the brain computes current and previously stored information to generate instructions and commands that are transformed into movement. This transformation is achieved at the neuromuscular junction, where a motor neuron synapses on a muscle governing its state of contraction. Therefore, to understand how purposeful movements are generated we need to understand how the nervous system is organised and how different regions communicate to control the correct sequence of contraction of hundreds of muscles that will produce the appropriate movement.

in https://openpress.sussex.ac.uk/introductiontobiologicalpsychology/chapter/the-motor-system/