Кальцитонин brakes реабсорбцию calcium and phosphate. How to get more vitamin c Properties of nervous processes have been put in a basis of classification of types ВНД: force, steadiness and mobility. By criterion of force of nervous processes allocate strong and weak types. At weak type excitation and braking processes weak, therefore mobility and steadiness of nervous processes cannot be characterised precisely enough. The exchange of water and mineral ions in an organism are closely interconnected that is caused by necessity of maintenance of osmotic pressure at rather constant level in the extracellular environment and in cages. Realisation of some physiological processes (excitation, synoptic transfer, muscle reduction) is impossible without maintenance in a cage and in the extracellular environment of certain concentration Na +, To +, Sa2+i of other mineral ions. All of them should arrive in an organism with food.