1. What is the major function of neurotransmitters?

A. to provide nutrition and oxygen to neurons
B. to aid in the production of neuronal proteins
C. to facilitate the transcription of neuronal DNA
D. to change the electrical activity of neurons

2. One neuron "communicates" with another by

A. releasing neurotransmitters into the synaptic gap.
B. sending a neural impulse across the synaptic gap.
C. causing its dendrites to enter the synaptic gap.

3. To say that a neuron has fired means that it has

A. released its neurotransmitters.
B. generated a neural impulse.
C. creating postsynaptic potentials.

4. Neurotransmitters are contained in _____ that are located in _____.

A. vesicles; axon terminals
B. axon terminals; dendrites
C. receptor sites; synapses
D. cell membranes; synaptic gaps

5. The resting potential of a neuron is the result of

A. the summation of postsynaptic potentials in its cell body.
B. the binding of neurotransmitters to receptor sites on its dendrites.
C. the distribution of ions on the inner and outer surfaces of its cell membrane.

6. A succession of action potentials that travel down an axon is referred to as a

A. neuronal communication.
B. neurotransmitter reuptake.
C. neural impulse.

7. The maintaining of a neuron's resting potential depends on the

A. storage of neurotransmitters in the vesicles of its axon terminals.
B. selective permeability of its cell membrane.
C. rapid influx of sodium ions after its threshold is reached.

8. Whether or not a neuron fires depends on the summation of _____ in the neuron's _____.

A. postsynaptic potentials; cell body
B. resting potentials; cell body
C. postsynaptic potentials; axon
D. resting potentials; axon

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