Nervous System

Neurons Function

send signals, or messages, all over your body which travels between your brain, skin, organs, glands and muscles.

Central nervous system (CNS)

Your brain and spinal cord make up your CNS. Your brain uses your nerves to send messages to the rest of your body. Each nerve has a protective outer layer called myelin. Myelin insulates the nerve and helps the messages get through.

nervous system

Your nervous system guides almost everything you do, think, say or feel. It controls complicated processes like movement, thought and memory. It also plays an essential role in the things your body does without thinking, such as breathing, blushing and blinking.

Peripheral nervous system

Your peripheral nervous system consists of many nerves that branch out from your CNS all over your body. This system relays information from your brain and spinal cord to your organs, arms, legs, fingers and toes.

Nerves Function

carry that data to and from your brain

Interneurons

connect motor neurons to other motor neurons and sensory neurons to other sensory neurons

Autonomic nervous system (Peripheral)

controls the activities you do without thinking about them

Somatic nervous system (Peripheral)

guides your voluntary movements

Messages Function

help you move your limbs and feel sensations, such as pain. Your eyes, ears, tongue, nose and the nerves all over your body take in information about your environment.

Sensory neurons

take information from your senses and send signals to your brain

Motor neurons

tell your muscles to move