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the conduction of neural information to the muscle fiber

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11y ago

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Does the sodium or potassium pump provide energy for neurons but does not affect resting membrane potential?

False


How does potassium affect the resting membrane potential of the cardiac cell?

Potassium plays a crucial role in maintaining the resting membrane potential of cardiac cells. It helps establish the negative charge inside the cell by moving out of the cell through potassium channels. This outward movement of potassium ions contributes to the polarization of the cell membrane, creating a negative resting membrane potential.


What affect does elevated extracellular chloride have on the resting membrane potential of a neuron?

Not much. Changing the extracellular chloride changes the level inside the cell so they will be in equilibrium again. The chloride ion plays little role in resting potential.


Explain why a change in extracellular sodium did not alter the membrane potential in the resting neuron?

A change in extracellular sodium concentration would not alter the resting membrane potential of a neuron because the resting potential is primarily determined by the relative concentrations of sodium and potassium ions inside and outside the cell, as mediated by the sodium-potassium pump and leak channels. Changes in extracellular sodium concentration would not directly affect this equilibrium.


How does depressants affect the heart rate?

depressants affect the heart rate by its heart rate


Which part of the body do depressants affect?

Depressants slow (or depress) the functioning of the entire body.


How does hyperkalemia affect action potential generation?

Hyperkalemia causes depolarization of the resting membrane potential, leading to reduced excitability of cells. This shift makes it harder for action potentials to fire, as the threshold for depolarization is increased. Additionally, hyperkalemia can alter the function of voltage-gated sodium channels, further impairing action potential generation.


How do stimulants and depressants affect nerve activity?

stimulants increase activity and depressants decrease activity.


How depressants affect the nervous system?

ilhem


Does the repolarization slows down or speeds up?

Repolarization is the phase in the cardiac action potential when the cell membrane potential returns to its resting state. It generally occurs at a relatively consistent pace in healthy cardiac cells. However, factors like ion channel dysfunction or certain medications can affect the speed of repolarization.


How do depressants affect the lungs?

Drinking alcohol temporarily slows the rate of respiration.


How do stimulatory neurotransmitters affect the membrane potential of the postsynaptic membrane?

This really depends on the postsynaptic cell and the NT in question. Assuming you are talking about neuro-muscular interactions, the membrane potential moves from a more negative state to a more positive state.