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What is the nervous system?
A network of neurons that controls and coordinates body activities
What are the divisions of the nervous system?
Central nervous system (brain and spinal cord) and peripheral nervous system
What is a reflex action?
An automatic, involuntary response to a stimulus without conscious thought
Give an example of a reflex action.
Withdrawing hand from a hot object, blinking, sneezing, knee-jerk
What is a reflex arc?
The path taken by nerve impulse during reflex action: receptor → sensory nerve → spinal cord → motor nerve → effector
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