depolarization etymology

Etymology

• "Depolarization" is derived from the Greek words:
  • "de-" (prefix meaning "away from" or "undo")
  • "polaris" (meaning "axis", "end of an axis", or "turning point")

Meaning

Depolarization refers to the loss or reversal of a polarized state. In the context of biology and physiology, it specifically means:

Electrical Depolarization (action potential):

• The process of becoming less negative or even positive inside a neuron or other excitable cell membrane.
• This occurs when ion channels open, allowing sodium ions to flow into the cell and potassium ions to flow out.
• It is the initial stage of an action potential, an electrical signal that allows neurons to communicate.

Chemical Depolarization:

• The process of becoming less negative or positive in a chemical gradient.
• This can occur due to the movement of ions or changes in the distribution of ions within a cell or tissue.

Origin

The term "depolarization" was first coined in the 19th century. It was originally used in the field of electrophysiology to describe the loss of electrical polarization in cells. The concept was later extended to include chemical polarization as well.

depolarization relate terms

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