Of the 90 elements that are in earth, only 20 of them participate in the construction of the human body. Of these 20 essential elements, four of them (carbon, oxygen, hydrogen, and nitrogen) constitute 96% and 99% of the mass of atoms, and are therefore known as biogjene elements. In chapters of organic chemistry and biochemistry, you will encounter familiar substances like carbohydrates, proteins, yndymat, vitamins and nucleic acids (DNA). These compounds are constructed primarily of these four elements.
In the human body there are also elements that are represented in very small quantities. These elements are called microelements (calcium 1.6%, 1.2% phosphorus, potassium 00.35%, at 0.25% sulfur, chlorine 0.15%, 0.15% sodium and magnesium 00:05%).
By trace most represented is calcium which is mainly concentrated in bones. Phosphorus also found in the bones, ATP, ADP, etc. Potassium is found in the cell fluids, while sodium and chloride in the blood. Chloride ions found in lukthor fluid in the form of hydrochloric acid. Sulfur is found in the composition of several proteins. Magnesium in greater quantity located in the bones where appropriate transported into cells, where plays an important role in cell reactions.
Other elements in the human body are in trace elements and specific roles. In this group are: iron (0.006%), zinc (0.003%), copper (0.0001%), manganese, cobalt, chromium, selenium, iodine, molybdenum, tin, vanadi, nickel, fluorine, silicon and arsenic that (the all make less than 0.0002% share of the measure).
The role of these elements in the human body is very significant for human health and the lack of them in the body manifested by various diseases. Therefore be taken daily needs of these elements.
