A substance can be classified as vitamin as it satisfies 2 criteria.
A substance can be classified as vitamin as it satisfies 2 criteria.
Humans require several mineral element for optional functioning . these minerals elements are broadly divided into two classes i.e. macro & micro minerals .
Macro minerals also referred to as major minerals are distinguished from micro minerals by their occurrence in the body .thus macro minerals constitute at least 0.01% of the total body weight or occur in minimum quantity of 5 g in a 60 kg body .
They are required in amount greater then 100mg per day on the other hand ,requirement of micro minerals varies from a few milligrams to micrograms per day .
Macro minerals largely perform structural functions e.g 99% of body calcium 85% of phosphorus And 50-60 % of magnesium is in the bone & is calcified tissue.
And 50-60 % of magnesium is in the bone & is calcified tissue . Besides this phosphorus is an important component of phospholipids & phosphor proteins that from important structure component of sell membranes . some micro minerals in addition to the structural role , are involved in catalytic function e.g magnesium exerts catalytic & regulatory role in number of biochemical reactions .
calcium function as a messenger in signal transduction in never & muscle cells . phosphorus is involved In the regulation of enzymes.
Although macro minerals are mainly involved in structural role while micro elements are involved in catalytic role , there seems to be some overlap , for some minerals .
Among minerals , calcium (CA) is the most abundantly present in humans, representing 52% of the body’s minerals content and amounting to 1.2% of the body weight .
In the elementary composition of the human body , calcium ranks fifth after oxygen , carbon , hydrogen and nitrogen , and it makes up 1.9% of the body by weight . Nearly all (99%)of total body calcium is located in the skeleton .The remaining 1% is equally distributed between the teeth and soft tissues , with only 0.1% in the extra cellular fluid (ECF)