A drug specifically blocks the Na+/K+ ATPase pump. What effect might this have on the action potential? It will shorten the duration of the action potential as there will not be as many ions available to cross the membrane. None, as action potentials rely on channels for Na+ and K+ to cross the membrane, not pumps. It will not have an immediate effect, but eventually action potentials will stop as the Na+ and K+ gradients are depleted. It will make action potentials more likely to occur as the pump normally makes the cell more negative, so without it the membrane will reach threshold more easily.
A drug specifically blocks the Na+/K+ ATPase pump. What effect might this have on the action potential? It will shorten the duration of the action potential as there will not be as many ions available to cross the membrane. None, as action potentials rely on channels for Na+ and K+ to cross the membrane, not pumps. It will not have an immediate effect, but eventually action potentials will stop as the Na+ and K+ gradients are depleted. It will make action potentials more likely to occur as the pump normally makes the cell more negative, so without it the membrane will reach threshold more easily.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:A drug specifically blocks the Na+/K+ ATPase pump. What effect might this have on
the action potential?
O
It will shorten the duration of the action potential as there will not be as many
ions available to cross the membrane.
None, as action potentials rely on channels for Na+ and K+ to cross the
membrane, not pumps.
It will not have an immediate effect, but eventually action potentials will stop as
the Na+ and K+ gradients are depleted.
It will make action potentials more likely to occur as the pump normally makes
the cell more negative, so without it the membrane will reach threshold more
easily.
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