Muscle Physiology: Membrane Potential and Action Potential

What is the driving force for the diffusion of uncharged molecules?

What is the main factor that determines the diffusion potential?

What is the term for the potential that exactly balances the tendency of an ion to diffuse down its concentration gradient?

What is the direction of the diffusion of Na+ ions in a solution with a higher concentration of Na+ and a lower concentration of Cl-?

What is the term for the difference in electric potential between the interior and exterior of a biological cell?

What is the purpose of the leak permeable channels in the membrane?

Which of the following ions has the highest equilibrium potential?

What is the result of the diffusion of Na+ ions down its concentration gradient?

What is the term for the potential that is maintained by a cell over a long period of time without significant change?

What is the condition required for the generation of a diffusion potential?

What is the effect of the movement of a few ions on the concentration of ions in bulk solution?

What is the role of the concentration gradient in the diffusion of Na+ ions?

What is the equation used to calculate the equilibrium potential of an ion?

What is the effect of the diffusion of Na+ ions on the membrane potential?

What is the relationship between the concentration gradient and the diffusion potential?

Which cells undergo controlled changes in their membrane potential?

What is the term for the potential that is generated by the movement of only a few ions?

What is the purpose of the theoretical membrane in the experiment?

What is the resting potential of nerve fibers when not transmitting nerve signals?

What determines the resting potential of nerve cells?

What is the selectivity of the potassium leak channel for potassium ions compared to sodium ions?

What is the net effect of potassium diffusion on the resting potential?

What is the function of the sodium-potassium pump in maintaining the resting potential?

Why do potassium ions move out of the cell through potassium leak channels?

What is the relative permeability of the nerve cell membrane to sodium and potassium ions?

What is the primary contributor to the resting potential of nerve cells?

What is the direction of net potassium ion movement through the potassium leak channel?

What is the term for the moment before an action potential begins?

What is the term for the minimal membrane potential needed to trigger an action potential?

What type of channels open during depolarization?

What happens to the membrane potential during repolarization?

What is the term for the period when the neuron is in a state of hyperpolarization?

What happens to the voltage-gated sodium channels during the absolute refractory period?

What is the result of the rapid diffusion of potassium ions out of the cell?

What is the term for the time needed for voltage-gated sodium channels to revert to their resting state?

What is the term for the state when the neuron is more negative than normal after an action potential?

What is the primary mechanism by which an action potential propagates along the axon?

What is the primary factor that determines the resting membrane potential?

What is the role of the Na+/K+ ATPase pump in maintaining the resting membrane potential?

What happens to the resting membrane potential when synaptic signals are received?

How does the Na+/K+ ATPase pump affect the movement of ions across the membrane?

What is the direction of propagation of an action potential along the axon?

What is the mechanism by which the resting membrane potential is maintained?

What is the effect of the leak channels on the resting membrane potential?