Each of the Following Contributes to the Unidirectional Propagation of Nerve

question 39

Multiple Choice

Each of the following contributes to the unidirectional propagation of nerve signals except

• A)dendrites only receive signals.
• B)presynaptic neurotransmitter secretion is separated from postsynaptic receptors.
• C)neuron membranes have a refractory period following generation of an action potential.
• D)ion channels are oriented to transport ions only into the neuron.
• E)action potentials initiate the hillock and propagate only down the axon.