Q4.3. After the rising phase, which ion channel is responsible for action potential returning to its resting Vm, and why? O Na* channels, because positive Na* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm O Na* channels, because positive Na* ions are at higher concentration inside the axon than outside, and so they leave the axon and raise V O K* channels, because positive K* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm K* channels, because positive K* ions are at higher concentration inside the axon than outside, and so they leave the axon and lower

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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and why?
Q4.3. After the rising phase, which ion channel is responsible for action potential returning to its resting Vm,
Na* channels, because positive Na* ions are at higher concentration outside the axon than inside, and so they enter the axon and
raise V m
Na* channels, because positive Na* ions are at higher concentration inside the axon than outside, and so they leave the axon and
raise V m
O K* channels, because positive K* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise
m
O K* channels, because positive K* ions are at higher concentration inside the axon than outside, and so they leave the axon and lower
Vm
Transcribed Image Text:and why? Q4.3. After the rising phase, which ion channel is responsible for action potential returning to its resting Vm, Na* channels, because positive Na* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise V m Na* channels, because positive Na* ions are at higher concentration inside the axon than outside, and so they leave the axon and raise V m O K* channels, because positive K* ions are at higher concentration outside the axon than inside, and so they enter the axon and raise m O K* channels, because positive K* ions are at higher concentration inside the axon than outside, and so they leave the axon and lower Vm
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