the conduction of neural information to the muscle fiber
False
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.
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.
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.
depressants affect the heart rate by its heart rate
Depressants slow (or depress) the functioning of the entire body.
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.
stimulants increase activity and depressants decrease activity.
ilhem
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.
Drinking alcohol temporarily slows the rate of respiration.
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.