All of the following statements about initiation and transmission of action potentials in neurons are correct EXCEPT:
A) The rate of transmission of an action potential is directly related to the diameter of the axon.
B) Information about the intensity of a stimulus is conveyed by changes in the size of the action potential generated.
C) The resting potential is maintained by differential ion permeabilities and the sodium-potassium pump.
D) Once initiated, local depolarizations stimulate a moving wave of depolarization down the axon.
E) A stimulus to the neuron can either depolarize or hyperpolarize the neuronal membrane.
Correct Answer:
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Q9: At rest, neurons exhibit a negative membrane
Q10: In a neuron at rest, which of
Q11: During the rapid increase in membrane potential
Q12: Why is it critical that the K+
Q13: The key feature of the action potential
Q15: Synaptic integration refers to
A) the summing of
Q16: Rising intracellular levels of which ion are
Q17: Otto Loewi performed an experiment in which
Q18: The major class(es) of neurotransmitter receptor(s) found
Q19: You could observe saltatory conduction in a
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