Загрузил Tamara Pop

воздействие солнца

Sun exposure to skin
The main effect of infrared
rays on the body – thermal.
They heat the surface of the
skin, causing the expansion of
capillaries, which leads to
General redness of the skin.
Ultraviolet rays have great biological
activity. In moderate doses their
action helpful. Increases the tone of
the Central nervous system. Under
their action, vitamin D is formed
and metabolism is enhanced.
Ultraviolet rays are harmful to
microorganisms.
First of all, children suffer from
solar starvation, who have a risk of
rickets. Therefore, it is necessary to
take vitamin D and regulate sun
exposure.
Ultraviolet rays can also adversely
affect the body: cause burns, the
appearance of age spots and eye
damage. Excessive ultraviolet radiation
stimulates the degeneration of skin
cells into malignant tumors.