Answer:
The nervous system maintains homeostasis by monitoring changes in the body and initiating responses to those changes. It is able to perform this important function by its ability to perceive stimuli and convert this information into nerve impulses. A nerve impulse begins when a nerve cell, or neuron, opens its membrane channels to sodium and potassium ions, resulting in a flow of these ions across the cell membrane. The flow causes a sudden change in electrical current, which flows along the neuron and is transmitted to other adjacent neurons. The result is an impulse that can travel very quickly between the nerves in your skin and elsewhere and your spinal cord and brain.
it controls mental and bodily functions.