Psychology & Psychiatry

How calcium channel mutations lead to cognitive dysfunction

A new study from Yale School of Medicine has shown that the neurons that generate higher cognition, and are a target of pathology in Alzheimer's disease and mental disorders such as schizophrenia, express an enrichment of ...


Treating nephrocalcinosis in newborns: A primer for clinicians

As many as 40% of preterm infants in the U.S. suffer from nephrocalcinosis, a condition that deposits excess calcium in kidneys. Unfortunately, it's often underdiagnosed. Neonatologists don't always check for nephrocalcinosis, ...

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Calcium (pronounced /ˈkælsiəm/) is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078 amu. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the Earth's crust. Calcium is also the fifth most abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.

Calcium is essential for living organisms, particularly in cell physiology, where movement of the calcium ion Ca2+ into and out of the cytoplasm functions as a signal for many cellular processes. As a major material used in mineralization of bones and shells, calcium is the most abundant metal by mass in many animals.

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