The Hair Loss Encyclopedia
concentration of calcium ions within a cell
Intracellular calcium refers to the concentration of calcium ions (Ca2+) within a cell. It plays a crucial role in various cellular processes, including muscle contraction, neurotransmitter release, and cell signaling. The levels of intracellular calcium are tightly regulated by cellular mechanisms, such as calcium channels, pumps, and storage in organelles like the endoplasmic reticulum.