Multiple Choice
Channels in the cell membrane:
A) are always gated
B) help maintain the concentration gradient
C) may be voltage- or chemically-gated
D) are selective to more than one ion per channel
E) both B and C
Correct Answer:

Verified
Correct Answer:
Verified
Q19: All of the following are characteristic of
Q20: _ results from an inability to transmit
Q21: An electrical synapse:<br>A)occurs at the synaptic cleft<br>B)occurs
Q22: The direction of a neural impulse travels
Q23: How does degeneration of the CNS differ
Q25: Depolarization occurs when:<br>A)the difference in potential across
Q26: Primary neuronal loss:<br>A)is variable in degree of
Q27: The major inhibitory neurotransmitter is:<br>A)dopamine<br>B)epinephrine<br>C)GABA<br>D)glutamate<br>E)the neuropeptides
Q28: During resting potential:<br>A)the extracellular fluid is 70
Q29: A neuron with an axon of small