Question 19 1 pts What would happen when both Na and K\' voltage-gated channels

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Question 19 1 pts What would happen when both Na and K' voltage-gated channels were opened in response to an action potential in the axon of a nerve cell? Na+ would move out of the cell, whereas K+ would move into the cell. Na+ would move into the cell, whereas K+ would move out of the cell Nat would move out of the cell but K+ flow would cease Na+ and K+ would both move into the cell. Na+ and K+ would both move out of the cell. None of the above Question 20 1 pts Resting neurons have a difference in electrical charge across the cell membrane because ion transporters require energy and are not active in a resting neuron. leak channels allow K+ ions to diffuse out of the cell. the concentration of Na+ is higher inside than outside the cell. voltage-gated channels in the membrane allow Na+ to enter the cell. K+ ions are pumped through channels until they reach equilibrium. None of the above

Explanation / Answer

What would happen when both Na and K voltage-gated channels were opened in response to an action potential in the axon of a nerve cell?

Na+ would move into the cell, whereas K would move out of the cell. When the threshold is met (the membrane has been depolarized enough by the presence of calcium ions at the beginning of the axon) the action potential will take place, causing first the opening of sodium channels, that will let in sodium, and then potassium channels will open to let it out and in that way creating a current until it reaches the end of the axon.

Resting neurons have a difference in electrical charge across the cell membrane because.

Leak channels allow K ions to diffuse out of the cell

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