A drug that acts as a antagonist at a synaptic junction will

1. A drug that acts as a antagonist at a synaptic junction will
a. prevent the neurotransmitter from binding to the postsynaptic membrane receptor sites
b. prevent the synthesis of neurotransmitter
c.prolong the duration of the postsynaptic potential produced by the neurotransmitter released from the axon terminal.
d. prevent the release of neurotransmitter from the axon terminal
e. none of the above

2. Which of the following statements is TRUE?
a. dendrites conduct nerve impulses towards the cell body of the neuron.
b. an axon from one neuron can form a synapse with a dendrite from another neuron.
c. axons conduct nerve impulses away from the cell body of the neuron.
d. all of the above

3. Neurotransmitter release would be inhibited by
a. stimulating repolarization of the axon terminal
b. blocking Ca+ influx in the axon terminal
c. blocking repolarization of the axon terminal
d. blocking K+ influx in the axon terminal
e. none of the above

4. All of the following statements about transmission along neurons are correct EXCEPT:
a. the rate of transmission of a nerve impulse is directly related tot he diameter of the axon.
b. information about the intensity of a stimulus is conveyed by changes in the size of  the voltage change during the action potential.
c. The resting membrane potential is maintained by different ions permeabilities and the sodium-potassium pump.
d. once initiated, local depolarizations stimulate a moving wave of depolarization down the axon.
e. a stimulus that affects the membrane's permeability to ions can either depolarize or hyperpolarize the membrane.