Answer:
The nervous system comprises of the brain, sensory organs and spinal cord. The nerves of the body is used to communicate with all the parts of the body.
The brain and the spinal cord is known as the control system of the body which is helps in taking decisions.
The central nervous system helps in maintaining balance of the body, processing the information and based on that response is generated.
The signals from the brain is sent to various parts of the body and from body the signals are sent to the brain for processing.
Hence, the nervous system helps in sensory, motor and integration part of the body.