Answer:
It takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain.
Step-by-step explanation:
For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.The same as when the temerature changes or you hear a loud moise. Your brain processes it and it causes your nervous system sends signals that determine how you or your body reacts.