Which of the following is currently thought to be a valid general principle of synaptic transmission?
A) Each neuron releases only one neurotransmitter.
B) Each neurotransmitter acts on only one receptor subtype.
C) All receptors are in postsynaptic membranes.
D) All neurotransmitters are released into the synaptic cleft.
E) none of the above
Answer: E
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Nodes representing concepts joined together by pathways that link related concepts is referred to as
a. a clustering hierarchy. b. an organizational schema. c. a lexical ordering. d. a semantic network.
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