A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.

A mineral needed for healthy teeth, bones, and other body tissues. It is the most common mineral in the body. A deposit of calcium in body tissues, such as breast tissue, may be a sign of disease.

A mineral that the body needs for many vital functions, including bone formation, regulation of heart rate and blood pressure, and muscle contraction.

An element with atomic symbol Ca, atomic number 20, and atomic weight 40.08.

Basic element found in nearly all organized tissues; a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40; it is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth; it is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation and in many enzymatic processes.