It keeps them strong. Bones serve as a very useful Calcium depository. It is required for bodily functions, Calcium deficiency causes, apart from osteoporosis and rickets: muscle cramps, the inability to clot blood, the inability to transmit nerve impulses, convulsive seizures, and the failure of certain enzyme systems. Regarding functioning of nerve transmissions, Calcium is important in regulating the heart.
The hydroxyapatite assure the strength of bones.
Minor inorganic salts help to maintain the pH of the living organism. They also act as catalysts in certain biochemical reactions.
Examples are: calcium carbonate, calcium oxalate, calcium fluoride etc.
Calcium chloride (CaCl2) is an inorganic compound.
Examples: sodium, potassium, magnesium, calcium chlorides etc.
Bone
Structure and Stability -JSO and strength
The function of calcium salts is to provide hardness and strength and resist compression.
Bones are formed principally from hydroxyapatite, a compound containing calcium: Ca10(PO4)6(OH)2.
Osseous tissue has calcium, salts, and blood vessels.
ossification.
Bone is a composite material, like fiberglass (something hard [and thus brittle] in a matrix of a more flexible substance. In fiberglass the glass makes the (fishing rod) strong, the plastic makes it tough. In bone, the calcium salts make it strong and hard, the connective tissue makes it tough.
calcium salts form the bulk of the inorganic material in bone. In addition, it's main function is to provide stability and structure.
High mineral content (calcium salts).
bone (osseus) tissue
Because of the hard calcium salts in the matrix
calcification
Tissue that forms cartilage gradually becomes impregnated with calcium salts.