When traveling along an axon, the cell membrane immediately ahead of an action potential depolarizes because of _________blank.Multiple Choicemembrane receptorsdiffusion of sodium currentthe sodium/potassium pumpdecreased membrane permeabilitypotassium efflux

Each action potential Blank______.Multiple choice question.begins in the synaptic terminal and spreads up the axon to the axon hillockspreads across the entire surface of the membrane so that the entire cell is depolarized at one timeaffects only a small area of the plasma membrane of the cell at a timebuilds upon the previous action potential to create a larger potential change

In response to an action potential, voltage-gated calcium channels Blank______ in the presynaptic cell's axon terminal.Multiple choice question.closeopen

Diffusion, degradation, and re-uptake all describe the mechanisms of Blank______.Multiple choice question.sodium and potassium movementreleasing neurotransmitters from presynaptic terminalspropagation of action potentialsremoving neurotransmitters from the synaptic cleft

During an action potential the inside of the cell membrane becomes Blank______ charged.Multiple choice question.negativelypositively

As an action potential occurs in one area of the axon, an electrical current to neighboring areas of the membrane initiates ______.Multiple choice question.a graded potentialhyperpolarization of the membraneanother action potential