Ion

Definition

An ion is an atom or molecule that has gained or lost one or more of its electrons, resulting in a net electrical charge. In the context of anatomy and physiology, ions play critical roles in processes such as nerve impulse transmission and muscle contraction.

Related terms

Electrolyte: A substance that produces an electrically conducting solution when dissolved in water, crucial for maintaining bodily functions.

Chemical bond: A lasting attraction between atoms, ions, or molecules that enables the formation of chemical compounds.

Membrane potential: The difference in electric potential between the inside and outside of a cell, vital for the conduction of nerve impulses