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1

provide nourishment to neurons, insulate them, help repair damage, and generally support neural functioning.
2

The major parts of the neuron are the , the and the .
3

Axons end in small bulges called terminal buttons that send messages to other neurons; the terminal buttons contain .
4

Neurons follow a(n) law; they are either on or off.
5

Even though all impulses move at the same strength or speed through a particular axon, there is variation in the .
6

The is an electrical impulse that travels through a neuron's axon when it is set off by a "trigger."
7

are specialized neurons that fire not only when a person enacts a particular behavior but also when a person simply observes another individual carrying out the same behavior.







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