Cellepotensialet
Cellepotensialet, also known as cellular potential or membrane potential, is a fundamental concept in cell biology and physiology. It refers to the electrical potential difference across the cell membrane, which is maintained by the selective permeability of the membrane to ions. The cell membrane acts as a semi-permeable barrier, allowing certain ions to pass through while blocking others. This selective permeability creates an imbalance in ion concentrations inside and outside the cell, leading to the establishment of a resting membrane potential.
The primary ions involved in the establishment of cellepotensialet are sodium (Na+), potassium (K+), and chloride
The resting membrane potential typically ranges from -50 to -90 millivolts, with the exact value depending on
In summary, cellepotensialet is the electrical potential difference across the cell membrane, maintained by the selective