Question

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basic cellular unit of the brain and nervous system that specializes in receiving and transmitting information
terminal button
myelin
glial cell
neuron
corpus callosum

Explanation:

Neurons are the basic cellular units of the brain and nervous system that receive and transmit information. Terminal buttons are parts of neurons, myelin is an insulating layer, dendrites are parts of neurons for receiving signals, and the corpus callosum is a structure connecting the two brain - hemispheres.

Answer:

D. neuron