puhkepotentsiaalista
Puhkepotentsiaalista refers to the resting potential of a cell, a concept particularly relevant in cell biology and neuroscience. It describes the electrical potential difference across the plasma membrane of a cell when it is not stimulated or actively transmitting a signal. This potential is primarily established by the uneven distribution of ions, such as sodium (Na+) and potassium (K+), across the cell membrane and the selective permeability of the membrane to these ions.
The resting potential is maintained by the action of ion pumps, most notably the sodium-potassium pump, which
This negative electrical potential inside the cell is crucial for cellular functions. For excitable cells like