Answer :
It occurs in all the cell types listed. These transient membrane potential changes are called graded potentials, and they tend to occur in the dendrites of the neuron and in the soma of the neuron.
What is graded potential ?
It depends on the charge of the ions in motion whether a depolarization or a hyperpolarization action occurs. This localised voltage shift, sometimes referred to as a graded potential or localised potential, has an inverse relationship with the stimulus intensity in terms of its amplitude.
- Graded potentials have amplitudes that are related to the amount of the input stimulus and can be depolarizing or hyperpolarizing. They are integrable in both space and time and move passively and equally in all directions.
- A graded potential is produced when a ligand opens a ligand-gated channel in the dendrites, allowing ions to enter (or exit) the cell. For instance, Na+ will enter the cell and K+ will exit until they both reach equilibrium.
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