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An animal's response to a stimulus is coordinated by its central nervous system (CNS). Neurons carry electrical impulses, and are connected by synapses. Some drugs and toxins affect how impulses pass from one neuron to the next across a synapse. After reading about the nervous system, check your understanding by taking a quiz, available at two levels of difficulty.
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Classroom Considerations
- Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)