Nervous System Overview

Front

Central Nervous System

Back

The central nervous system consists of the brain and spinal cord. It processes information and coordinates activity throughout the body.

Front

Peripheral Nervous System

Back

The peripheral nervous system includes all the nerves outside the brain and spinal cord. It connects the central nervous system to the limbs and organs.

Front

Autonomic Nervous System

Back

Controls involuntary body functions like heartbeat, breathing, and digestion.

Front

Somatic Nervous System

Back

Controls voluntary movements and transmits sensory information to the central nervous system.

Front

brain

Back

The organ in the head responsible for thought, memory, emotion, and sensory processing.

Front

myelin sheath

Back

A protective covering that surrounds axons, helping to speed up nerve impulses.

Front

Cerebellum

Back

The cerebellum is a part of the brain that helps control balance and coordination.

Front

Cerebrum

Back

The cerebrum is the largest part of the brain, responsible for voluntary actions, speech, senses, thought, and memory.

Front

brainstem

Back

The brainstem connects the brain to the spinal cord and controls basic life functions such as breathing and heart rate.

Front

nerves

Back

Nerves are bundles of fibers that transmit signals between the brain, spinal cord, and the rest of the body.