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Why does the polarity of a cell membrane reverse during an action potential?
Wiki User
∙ 13y ago
During an action potential the neuron receives a stimulus causing the cell membrane to become more permeable to sodium than potassium, calling the polarity to change.
Wiki User
∙ 13y ago
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What causes the inside of the membrane to reverse charge and begin action potential?
Depolarization
Why don't the terms depolarization and action potential mean the same thing?
Depolarization occurs when a stimulus opens sodium channels which allow more sodium to go into the membrane making it less negative and more positive (toward reaching threshold). An action potential can only occur once the membrane reaches threshold which means it has reached the level needed through depolarization. An action potential is a brief reversal in polarity of the membrane making the inside more positive and the outside more negative, the reverse occurs again once the membrane reaches resting potential.
What is a sequence of rapidly occurring events that decrease and reverse the membrane potential and then eventually restore it to the resting state?
Action potential or impulses
What transmission of the depolarization wave along the neurons membrane?
Action potential
What is the falling phase of action potential?
Hyperpolarization (the membrane potential becomes more negative)
What causes the inside of the membrane to reverse charge and begin action potential?
Depolarization
Why don't the terms depolarization and action potential mean the same thing?
Depolarization occurs when a stimulus opens sodium channels which allow more sodium to go into the membrane making it less negative and more positive (toward reaching threshold). An action potential can only occur once the membrane reaches threshold which means it has reached the level needed through depolarization. An action potential is a brief reversal in polarity of the membrane making the inside more positive and the outside more negative, the reverse occurs again once the membrane reaches resting potential.
What is a sequence of rapidly occurring events that decrease and reverse the membrane potential and then eventually restore it to the resting state?
Action potential or impulses
What transmission of the depolarization wave along the neurons membrane?
Action potential
What change in membrane potential triggers action potential?
depolarization
Period during which potassium ions diffuse out of the neuron due to a change in membrane permeability?
Membrane potential - a nerve cell set and ready to fire;"The wave of reverse polarity" i.e. sodium versus potassium trans-cell-membrane ion passaging - a nerve cell firing; andRecharge period - the regeneration time.
What is the rapid change in membrane's potential caused by the deplariztion of a neuron?
action potential
What change in membrane potential depolarization or hyperpolarization triggers an action potential?
despolarization
What is the falling phase of action potential?
Hyperpolarization (the membrane potential becomes more negative)
The depolarization of a neural membrane creates a?
Action potentialaction potential
Where do neurotransmitters that bind the postsynaptic membrane generate?
action potential
What is the result of inhibitory neurotransmission on the postsynaptic membrane?
Hyperpolarization of the membrane. This inhibits action potential generation.
