1.7. Why does Na* enter the cell during the action potential?

Anatomy & Physiology
1st Edition
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Chapter12: The Nervous System And Nervous Tissue
Section: Chapter Questions
Problem 25RQ: What does a ligand-gated channel require in order to open? increase in concentration of Na+ ions...
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Q4.7. Why does Na* enter the cell during the action potential?
Because the Na* channels are open and only let Na* move from outside to inside
Because the action potential pulls positive ions into the cell while Na* and K* channels are open
Because Na channels are open and allow Na* ions to move down the length of the axon to
produce neurotransmitter at the axon terminal
Because Na" channels are open and there is a higher concentration of Na outside of the neuron
than inside
Transcribed Image Text:Q4.7. Why does Na* enter the cell during the action potential? Because the Na* channels are open and only let Na* move from outside to inside Because the action potential pulls positive ions into the cell while Na* and K* channels are open Because Na channels are open and allow Na* ions to move down the length of the axon to produce neurotransmitter at the axon terminal Because Na" channels are open and there is a higher concentration of Na outside of the neuron than inside
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