Why do we need a line on the palms
• What are lines on the palms of
Palmists sure that the lines on the palms - a "path" by which one can know the future of man. But from a scientific point of view, they have a very practical application.
If you rely on Darwin's theory of evolution, we can see that the papillary lines are characteristic not only for humans but also for other primates. As a well-developed color binocular vision, and nails, we have replaced the claws. Palm and the finger papillary line - original wrinkles on the skin surface - the capture of increased tenacity threads and, together with the features listed above were good body adaptation to the tree of life. Therefore, increasing the chances to survive and pass on their genes to offspring, among which a considerable distance were the ancestors of humans. This theory says the presence of spider monkeys, actively using while moving its tail, a kind of "palm" on the surface, which covers the branch: in this place is formed free from wool pad with papillary lines.
In the course of the evolution of papillary lines remained. This feature varies so much from person to person, even in identical twins papillary patterns different. And, importantly, it is unchanged throughout life. Therefore, scientists are so fond of analyzing fingerprints - they are resistant to external factors and, most importantly, to the age-related changes. pad size increases and the pattern keeps all the subtle and precise characteristics: shape, ridge count and so on.. This is a big problem for those who are in trouble with the law and is afraid of being recognized. Even grinding or laser removal does not give consistent results, and with the time patterns are restored. They may be partly to hide the scars, but agree that not all ten fingers and two hands.
Sometimes drawing finger patterns is simplified. This is typical of people with Down syndrome. They have, in addition to simplifying the papillary lines, there is a range of disorders of the central nervous system and increases the incidence of other anomalies.
Sometimes it happens that the papillary lines nonexistent. For example, in Switzerland, the cases of genetic anomalies are described in which all the fingers, hands and feet perfectly smooth. Its carriers belong to the same family and have also other abnormalities in the structure and functioning of the skin: no number of receptors, sweat glands, etc., similar characteristics Winners bit... This is partly due to the fact that the nervous system of the skin and tissues develop from the outer germ layer - the ectoderm, so rough mutation most likely will be lethal.