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When this occurs, the membranes potenial drops, as potassium and sodium diffuse with their gradient.

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Dimitri Welch

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2y ago
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13y ago

they are released from the outer membrane surface.

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12y ago

Yes, sodium ions play a role in the polarization of the cell membrane.

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11y ago

it is a compounad

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Q: What happens when you open the sodium channels in the membrane of a neuron?
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Opening of sodium channels in the membrane of a neuron results in?

depolarization.


What happens to the neuron if sodium channels do not open?

causes chemically gated sodium channels to open


The start of an action potential?

An action potential starts when sodium channels in a neuron end open and sodium ions rush is, depolarizing the neuron's membrane.


Effects of lidocaine on nerves?

it prevents sodium channels from opening which removes a neuron's resting membrane potential


Opening sodium channels in the in the axon membrane causes?

Depolarization of the cell membrane. When the sodium channels open there is a rush of sodium ions down their concentration gradient into the cell. As they carry positive charge they reduce the potential difference (inside negative) across the membrane of the neuron.


Why Sodium and potassium ion can only cross in axon membrane through protein channel explain why?

At rest sodium in the outside and potassium on the inside as action potential propagate along the axon, depolirization happens and sodium channel opens and allow sodium ions to flood into the neurone. A wave of deporization spread along the neuron, the neuron membrane contain specialised protein called channels. the channel from pore.


How is an action potential propagated down an axon after voltage-gated sodium channels open in a region of the neuron's membrane?

The entry of sodium ions into the neuron and their diffusion to adjacent areas of the membrane causes those portions of the membrane to become depolarized and results in the opening of voltage-gated sodium channels farther down the axon, which release potassium ions to the outside, returning the charge to its previous state


Function membrane receptor at chemical synapse?

Membrane receptors at a synapse are ligand-gated ion channels that open and allow sodium ions to flow into the neuron upon binding of the neurotransmitter ligand to generate an action potential in the neuron.


What happens when a resting neuron's membrane depolarizes?

If it is sufficiently depolarized it will fire an action potential A depolarized neuron will successfully pass a message. If you have a polarized neuron will not be able to feel a burn, etc.


What is The region of a neuron with voltage-gated sodium channels?

soma


In action potential the sodium enter to depolarize the stimulated area not whole the nerve why?

Sodium ions can enter the neuron in the stimulated areabecause in this area sodium channels open up, allowing the sodium ions to flow down their concentration gradient. In other parts of the membrane these channels remain closed.


What molecularly happens a neuron affected by lidocaine?

Lidocaine is what is called an open sodium channel blocker. This means that it binds preferentially to sodium channels when they are in the open (letting sodium into the cell) state.