Question

High rate of depolarisation can cause _____​

Answer 1

Explanation:

See videos: Neuron resting potential description, Neuron resting potential mechanism

Hyperpolarization is when the membrane potential becomes more negative at a particular spot on the neuron’s membrane, while depolarization is when the membrane potential becomes less negative (more positive). Depolarization and hyperpolarization occur when ion channels in the membrane open or close, altering the ability of particular types of ions to enter or exit the cell. For example:

The opening of channels that let positive ions flow out of the cell (or negative ions flow in) can cause hyperpolarization. Examples: Opening of channels that let \text K^+K

+

start text, K, end text, start superscript, plus, end superscript out of the cell or \text {Cl}^-Cl

−

start text, C, l, end text, start superscript, minus, end superscript into the cell.

The opening of channels that let positive ions flow into the cell can cause depolarization. Example: Opening of channels that let \text {Na}^+Na

+

start text, N, a, end text, start superscript, plus, end superscript into the cell.