Nervous System Basics

Front

nervous system

Back

the set of organs that uses information from the senses to control all body systems

Front

brain

Back

organ in the nervous system that sends and receives messages from the other body organs

Front

spinal cord

Back

a thick bundle of nerves inside the spine

Front

central nervous system

Back

part of the nervous system made up of the brain and spinal cord

Front

peripheral nervous system

Back

part of the nervous system that is not part of the central nervous system and receives sensory information from cells in the body

Front

sensory organ

Back

organs such as the skin, eyes, ears, nose, and tongue that gather information from outside the body

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reflex

Back

an action or movement of the body that happens automatically as a reaction to something

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instinct

Back

an inherited behavior, one that is not learned but is done automatically

Front

neuron

Back

a cell that transmits information

Front

stimulus

Back

a change that causes a reaction