QuestionSBA
QuestionChoice
As the neuron returns back to resting potential, K+ is actively transported out (not in) through the Na+/K+ ATPase.
10000763
c
K+ in
QuestionChoice
Action potentials open voltage-gated calcium channels at the axon terminal. This allows Ca2+ to diffuse in, which causes vesicle fusion at the synapse and neurotransmitter release.
10000765
e
Ca2+ in
QuestionChoice
Na+ diffuses in during depolarization, so the membrane potential becomes more positive.
10000762
b
Na+ in
QuestionChoice
K+ diffuses out of the neuron during repolarization, making the membrane potential more negative.
10000761
a
K+ out
QuestionChoice
As the neuron returns back to resting potential, Na+ is actively transported through the Na+/K+ ATPase.
10000764
d
Na+ out
Concept
Chapter
2693
3822
Membrane Potential
Topic
152
Neuroscience
12699
During an action potential, movement of which ion is responsible for repolarisation?
a