Navigation Menu Search PhysiologyWeb
PhysiologyWeb Logo
PhysiologyWeb
  Home  |  FAQ  |  About  |  Contact  |   - Sign In
 Search PhysiologyWeb
   
Home > Glossary > C > Calcium

Glossary of Physiology Terms -
Calcium

— share —
Share on Facebook    Share on X    Share on LinkedIn    Share on Pinterest    Share on Reddit    Email    Copy URL

Calcium

Abbreviation:
Ca2+

Definition:
Calcium (Ca2+) is a divalent cation. It plays an important role in physiological processes such as muscle contraction and synaptic transmission. Calcium is also an intracellular messenger.

The extracellular concentration of Ca2+ is about 2 mM. The intracellular concentration of Ca2+ is about 70 nM.




Posted: Wednesday, February 5, 2014
Last updated: Wednesday, March 12, 2025
— share —
Share on Facebook    Share on X    Share on LinkedIn    Share on Pinterest    Share on Reddit    Email    Copy URL