The body system that allows an animal to sense and respond to its environment and control body functions, made up of the brain, spinal cord, nerves and sense organs.

The network of nerves that spread through the body and send messages between the sensory organs, central nervous system and the muscles and glands

A type of neuron (nerve) that transmits messages from receptors to the central nervous system

A type of neuron (nerve) that transmits messages from sensory neurons to motor neurons. These Neurons are in the spine and brain.

A type of neuron (nerve) that sends messages from the central nervous system to muscles (motors) or glands.

Something that can have an effect on the nervous system, such as a smell, image or pain. Something you can detect with your Nervous System.

A type of specialized cell that can detect a stimulus, such as light, heat, touch or sound. It provides the nervous system with information about the body and the external world.

An organ that acts in response to a stimulus; for example, a muscle or gland.

The change your body does after it has detected a stimulus and brought about a change made by muscles or glands.

A type of receptor that detects chemicals, including tastes and smells.

Chemo-receptors are found in the following sensory organs.

A type of receptor that detects touch, pressure, sound or motion; located in the skin, muscles and inner ear.

A type of receptor that detects light.

Photo-receptors are found in the following sensory organs.

A type of receptor that detects heat and changes in temperature, located mainly in the skin and muscles

A place where two neurons form a connection where they can send signals to each other across a small gap