What are 3 factors that contribute to the resting membrane potential being?

Membrane potentials in cells are determined primarily by three factors: 1) the concentration of ions on the inside and outside of the cell; 2) the permeability of the cell membrane to those ions (i.e., ion conductance) through specific ion channels; and 3) by the activity of electrogenic pumps (e.g., Na+/K+-ATPase and …

What affects resting membrane potential quizlet?

The resting membrane potential is dependent upon two important factors: 1) differences in sodium and potassium concentrations across the membrane (electrochemical gradients) and 2) differences in sodium and potassium membrane permeability. – The concentration of K+ is higher inside than outside the cell.

What factors establish the resting membrane potential of a neuron?

The resting membrane potential is determined by the uneven distribution of ions (charged particles) between the inside and the outside of the cell, and by the different permeability of the membrane to different types of ions.

What is the most important factor in setting the resting membrane potential?

Typically, the amount of certain potassium channels is most important for control of the resting potential (see below). Some ion pumps such as the Na+/K+-ATPase are electrogenic, that is, they produce charge imbalance across the cell membrane and can also contribute directly to the membrane potential.

What factors result in the resting membrane potential being a negative value?

The negative charge within the cell is created by the cell membrane being more permeable to potassium ion movement than sodium ion movement. In neurons, potassium ions are maintained at high concentrations within the cell while sodium ions are maintained at high concentrations outside of the cell.

What factors contribute to the resting membrane potential of a neuron or muscle cell?

What affects the resting membrane potential of excitable cells?

The resting membrane potential is a result of different concentrations inside and outside the cell. The difference in the number of positively charged potassium ions (K+) inside and outside the cell dominates the resting membrane potential (Figure 2).

What factors affect the nerve resting potential?

The resting potential is determined by concentration gradients of ions across the membrane and by membrane permeability to each type of ion.

What causes a resting potential to develop in a neuron?

The resting potential is determined by concentration gradients of ions across the membrane and by membrane permeability to each type of ion. Ions move down their gradients via channels, leading to a separation of charge that creates the resting potential.