Main Function: The nervous system is one of the most important system in your body. It’s job is to send and receive messages, also control and communicate. Your nervous system is also responsible for controlling voluntary movements, controls sensory processing, language and communicating, learning and memory, reasoning, planning, movement, your emotions, notice touch, pressure, temperature, pain, hearing, seeing, coordination, sense of balance, your breathing, your heart rate, blood pressure, swallowing and digestion.