Calcium is an essential mineral and a major component of teeth and bonescalcium contributes to normal blood clottingneeded for the maintenance of normal bonescontributes to normal energy yielding metabolismcontributes to normal muscle functioncontributes to normal neurotransmissioncontributes to the normal function of digestive enzymeshas a role in the process of cell division and specialisationis needed for the maintenance of normal teethvitamin d contributes to normal absorptionutilisation of