45. Nervous System
Neurons and Action Potentials
1:02 minutes
Problem 4
Textbook Question
Textbook QuestionWhat causes a nerve signal to move from one end of a neuron along the length of the neuron to the other end? What is a nerve signal, exactly? Why can't it go backward? How is a nerve signal transmitted from one neuron to the next across a synapse? Write a short paragraph that answers these questions.
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