In the Central Nervous System

Chemical synapses between neurons operate according to the same general principles as the synapse between a motor neuron and a muscle cell discussed in Chapter 8. In the patellar reflex, for example, presynaptic sensory neurons activate postsynaptic motor neurons through a sequence of events similar to those at the neuromuscular junction. However, despite the overall similarity between neuron-to-neuron synapses and neuron-to-muscle synapses, some important differences do exist. This chapter will consider some of those differences, as well as the similarities.

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