Ouabain is a chemical used on poison arrows in Africa. It works by inhibiting the sodium-potassium pump. What effect does this chemical have on an action potential?
A) It causes the release of a neurotransmitter that causes an action potential.
B) It prevents the stimulation of an action potential by removing sodium from the cell.
C) It immediately causes an action potential to be generated.
D) There is no direct effect because the pump is used to maintain ion distributions, not to cause an action potential.
Answer: D
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