The effect of cold on the entire surface of the body, when its temperature drops below 35 °, causes general cooling of the body. The prolonged action of low temperatures can lead to freezing, while the functions of the body are inhibited, up to their complete extinction. However, one should not think that during freezing the body temperature reaches zero. A person dies when his body temperature drops to 17 – 25 °.
The body becomes less resistant to cooling during starvation, significant fatigue, intoxication, getting into cold water, as well as after injuries, blood loss, It is noticed that hypothermia occurs faster in old people and children. High humidity, strong wind, especially if a person is dressed in light, tight or wet clothes, contribute to cold injury.
The onset of general cooling has characteristic signs – agitation, chills, blueness of the lips, pallor and cooling of the skin, “goose bumps”, shortness of breath, increased heart rate. Continue reading
A naive question, even a little ridiculous, if you do not think about it in all seriousness. And if you think about it, it’s an extremely difficult question! We are now gathering even a whole conference, interview at least a hundred scientists: what is love? – with certainty no one “formulates”. Everyone feels love in his own way, for everyone in it – his own light, his own secret.
Six centuries ago, the same age as Oleg, a young Italian Francesco Petrarch with pain and trepidation, asked himself: “If this love is not this heat, what affliction shakes me? Since he is love, then what is love? Good? But these torments, god! So an evil fire? .. And the sweetness of these torments! ”
How much is said, how much has been written since then about the torment and bliss of love! And although there are really few scientific books on this subject, art has explored love with all its vigilance and attention to its slightest signs and shades. Continue reading
Skin is an important and complex organ that performs various functions. It protects the body from external influences (mechanical, chemical, physical). Healthy and intact skin creates a reliable barrier to pathogens. She participates in the processes of respiration, excretion, thermoregulation; its role in metabolism and other vital processes is great.
The outer epidermal layer, or epidermis (I), is isolated in the skin. the skin itself – the dermis (II) and the subcutaneous tissue lying below it – the hypodermis (III).
The epidermis is formed by several dozen layers of epithelial cells lying one above the other. Its thickness is not the same everywhere, the thickest epidermis – up to 1.5 millimeters – has the skin of the soles, palms, and the thinnest – 0.03 millimeters – the skin of the eyelids. Continue reading