| − | {{Element | name=Calcium | symbol=Ca | anumber=20 | amass=40.1 amu | noe=20 | class=Standard metal | cstructure=Cubic | color=Silver | date=1808 | discname=[[Sir Humphrey Davy]] | origname=From the Latin ''calcis''. | uses=Calcium is one of the primary elements in bones, shells, etc. Taking Calcium internally can promote bone growth. | obtained=Chalk, limestone, marble, vitamin to promote bone growth. }} | + | {{Element | name=Calcium | symbol=Ca | anumber=20 | amass=40.1 amu | noe=20 | class=Standard metal | cstructure=Cubic | color=Silver | date=1808 | discname=[[Sir Humphrey Davy]] | origname=From the Latin ''calcis''. | uses=Calcium is one of the primary elements in bones, shells, etc. Taking calcium internally can promote bone growth. | obtained=Chalk, limestone, marble, vitamin to promote bone growth. }} |
| − | '''Calcium''' is a very important element to human physiology, as calcium-phosphate salts form the basis for the creation of [[bones]]. Calcium in its pure form is referred to as "the white element" and is kept sealed in underground chambers due to the hazards involved in its handling. | + | '''Calcium''' is a very important element to human physiology, as calcium-phosphate salts form the basis for the creation of [[bones]]. It is also a critical cellular component in all organisms, and in animals serves roles of particular importance in blood, the cardiovascular system, and the nervous system. Consuming too much calcium can lead to kidney stones, which are typically composed of calcium deposits. |